The ISC/IRC system and mode entry statistics area of the DFHSTUP listing is for a CICS® system using intersystem communication. This provides summary statistics for the CICS intercommunication facility.
This section contains the following statistics:
The system entry statistics record information for both ISC and IRC connections. Some of the information is unique to each type of connection.
These statistics can be accessed online using the EXEC CICS COLLECT STATISTICS CONNECTION command, and are mapped by the DFHA14DS DSECT. For programming information about the EXEC CICS COLLECT STATISTICS command, see the CICS System Programming Reference manual.
This DSECT is to be used:
CICS always allocates a SEND session when sending an IRC request to another region. Either a SEND or RECEIVE session can be allocated when sending requests using LU6.1 ISC, and either a contention loser or a contention winner session can be allocated when sending requests using APPC.
In LU6.1, SEND sessions are identified as secondaries, and RECEIVE sessions are identified as primaries.
DFHSTUP name | Field name | Description |
---|---|---|
Connection name | A14CNTN | corresponds to each system entry defined by a CONNECTION
definition in the CSD, or by autoinstall.
Reset characteristic: not reset
|
Connection netname | A14ESID | is the name by which the remote system is known in the
network--that is, its applid.
Reset characteristic: not reset
|
Access Method / Protocol | A14ACCM | is the communication access method used for this connection.
The values are:
|
A14EFLGS | is the communication protocol used for this connection.
The values are:
|
|
Autoinstalled Connection Create Time | A14AICT | is the time at which this connection was autoinstalled,
in local time. The time is expressed as hours:minutes:seconds.decimals. The DSECT field contains the value as a store clock (STCK). This field
is only applicable to an autoinstalled APPC connection. For all other types
of connection the value will be nulls (x'00').
|
Autoinstalled Connection Delete Time | A14AIDT | is the time at which this connection was deleted, in local
time. The time is expressed as hours:minutes:seconds.decimals. The DSECT field contains the value as a store clock (STCK). This field
is only set if this is an autoinstalled APPC connection that has been deleted,
that is, this field is only set in an unsolicited statistics (USS) record.
For all other types of connection and all other types of statistics record
the value will be nulls (x'00').
|
Send session count | A14ESECN | is the number of SEND sessions for this connection. This
field applies to MRO and LU6.1 connections only.
Reset characteristic: not reset
|
Receive session count | A14EPRMN | is the number of RECEIVE sessions for this connection.
This field applies to MRO and LU6.1 connections only.
Reset characteristic: not reset
|
AIDs in chain | A14EALL | is the current number of automatic initiate descriptors
(AIDs) in the AID chain.
Reset characteristic: not reset
|
Generic AIDs in chain | A14ESALL | is the current number of automatic initiate descriptors
(AIDs) that are waiting for a session to become available to satisfy an allocate
request.
Reset characteristic: not reset
|
ATIs satisfied by contention losers | A14ES1 | is the number of ATI requests (queued allocates) that
have been satisfied by contention loser sessions (primaries for LU6.1). This
is always zero for IRC system entries. For APPC, this field is zero when written
to SMF, but if accessed online using the EXEC CICS COLLECT STATISTICS command, this field
is the summation of the equivalent mode entry statistics.
Reset characteristic: reset to zero
|
ATIs satisfied by contention winners | A14ES2 | is the number of ATI requests (queued allocates) that
have been satisfied by contention winner sessions (secondaries for LU6.1).
This field is the total ATIs when the system entry is for IRC. For APPC, this
field is zero when written to SMF, but if accessed online using the EXEC CICS COLLECT STATISTICS command, this field is the summation of the equivalent
mode entry statistics.
Reset characteristic: reset to zero
|
Current contention losers | A14E1RY | is the number of contention loser sessions (primaries
for LU6.1) that are currently in use.
Reset characteristic: not reset
|
Peak contention losers | A14E1HWM | is the peak number of contention loser sessions (primaries
for LU6.1) that were in use at any one time.
Reset characteristic: reset to current value
|
Current contention winners | A14E2RY | is the number of contention winner sessions (secondaries
for LU6.1) that are currently in use.
Reset characteristic: not reset
|
Peak contention winners | A14E2HWM | is the peak number of contention winner sessions (secondaries
for LU6.1) that were in use at any one time.
Reset characteristic: reset to current value
|
Total bids sent | A14ESBID | is the total number of bids that were sent. A bid is sent
on an LU6.1 RECEIVE session only. This field is always zero for IRC entries.
For APPC, this field is zero when written to SMF, but if accessed online using
the EXEC CICS COLLECT STATISTICS command, this field is the summation of the equivalent
mode entry statistics.
Reset characteristic: reset to zero
|
Current bids in progress | A14EBID | is the number of bids currently in progress. A bid is
sent on an LU6.1 RECEIVE session only. This field is always zero for IRC system
entries. For APPC, this field is zero when written to SMF, but if accessed
online using the EXEC CICS COLLECT STATISTICS command, this field is the summation
of the equivalent mode entry statistics.
Reset characteristic: not reset
|
Peak bids in progress | A14EBHWM | is the peak number of bids that were in progress at any
one time. A bid is sent on an LU6.1 RECEIVE session only.
Reset characteristic: reset to current value
|
Peak outstanding allocates
For more information see 1 |
A14ESTAM | is the peak number of allocate requests that were queued
for this system. For APPC this field is incremented only for generic allocate
requests.
Reset characteristic: reset to current value
|
Total number of allocates
For more information see 1 |
A14ESTAS | is the number of allocate requests against this system.
For APPC:
Reset characteristic: reset to zero
|
Queued allocates
For more information see 1 |
A14ESTAQ | is the current number of queued allocate requests against
this system. An allocate is queued due to a session not being available at
this moment. This includes waiting for a bind, a bid, or all sessions are
currently in use. For APPC:
Reset characteristic: not reset
|
Failed link allocates
For more information see 1 |
A14ESTAF | is the number of allocate requests that failed due to
the connection being released, out of service, or with a closed mode group.
For APPC:
Reset characteristic: reset to zero
|
Failed allocates due to sessions in use
For more information see 1 |
A14ESTAO | is the number of allocate requests that failed due to
a session not being currently available for use. These requests get SYSBUSY
responses to the allocate. This field is incremented for allocates failing
with an AAL1 abend code.
For APPC only:
Reset characteristic: reset to zero
|
Maximum queue time (seconds) | A14EMXQT | is the MAXQTIME specified on the CONNECTION definition.
This value represents the maximum time you require to process an allocate
queue on this connection. If the allocate queue would take greater than this
time to process then the entire queue would be purged. This value only takes
effect if the QUEUELIMIT value (A14EALIM) has been reached.
Reset characteristic: not reset
|
Allocate queue limit | A14EALIM | is the QUEUELIMIT parameter specified on the CONNECTION
definition. If this value is reached then allocates are rejected. ![]() ![]() Reset characteristic: not reset
|
Number of QUEUELIMIT allocates rejected | A14EALRJ | the total number of allocates rejected due to the QUEUELIMIT
value (A14EALIM) being reached.
Reset characteristic: reset to zero
|
Number of MAXQTIME allocate queue purges | A14EQPCT | is the total number of times an allocate queue has been
purged due to the MAXQTIME value (A14EMXQT). A queue is purged when the total
time it would take to process a queue exceeds the MAXQTIME value.
Reset characteristic: reset to zero
|
Number of MAXQTIME allocates purged | A14EMQPC | is the total number of allocates purged due to the queue
processing time exceeding the MAXQTIME value (A14EMXQT).
If sessions have not been freed after this mechanism has been invoked then any subsequent allocate requests are purged and included in this statistic as the MAXQTIME purging mechanism is still in operation. Reset characteristic: reset to zero
|
Number of XZIQUE allocates rejected | A14EZQRJ | is the total number of allocates rejected by the XZIQUE
exit.
Reset characteristic: reset to zero
|
Number of XZIQUE allocate queue purges | A14EZQPU | is the total number of allocate queue purges that have
occurred at XZIQUE request for this connection.
If accessed online using the EXEC CICS COLLECT STATISTICS command, this field additionally contains the summation of the equivalent mode entry statistics. Reset characteristic: reset to zero
|
Number of XZIQUE allocates purged | A14EZQPC | is the total number of allocates purged due to XZIQUE
requesting that queues should be purged (A14EZQPU) for this connection.
If XZIQUE has not overridden this mechanism (by response) then any subsequent allocate requests are purged and included in this statistic as the XZIQUE purging mechanism is still in operation. If accessed online using the EXEC CICS COLLECT STATISTICS command, this field additionally contains the summation of the equivalent mode entry statistics. Reset characteristic: reset to zero
|
File control (FC) function shipping requests | A14ESTFC | is the number of file control requests for function shipping.
Reset characteristic: reset to zero
|
Interval control IC) function shipping requests | A14ESTIC | is the number of interval control requests for function
shipping.
Reset characteristic: reset to zero
|
Program control (PC) function shipping requests | A14ESTPC | is the number of program control link requests for function
shipping.
Reset characteristic: reset to zero
|
Transient data (TD) function shipping requests | A14ESTTD | is the number of transient data requests for function
shipping.
Reset characteristic: reset to zero
|
Temporary storage (TS) function shipping requests | A14ESTTS | is the number of temporary storage requests for function
shipping.
Reset characteristic: reset to zero
|
DL/I function shipping requests | A14ESTDL | is the number of DL/I requests for function shipping.
Reset characteristic: reset to zero
|
Terminal sharing requests | A14ESTTC | is the number of transaction routing commands. This number
is incremented on both regions when the transaction is routed, and when the
terminal I/O request is routed between regions. This field is not supported
for LU6.1.
Reset characteristic: reset to zero
|
NOT IN THE DFHSTUP REPORT | A14GACT | is the time at which this connection was autoinstalled,
in GMT. The time is expressed as hours:minutes:seconds.decimals. The DSECT field contains the value as a store clock (STCK). This field
is only applicable to an autoinstalled APPC connection. For all other types
of connection the value will be nulls (x'00').
Reset characteristic: not reset
|
NOT IN THE DFHSTUP REPORT | A14GADT | is the time at which this connection was deleted, in GMT.
The time is expressed as hours:minutes:seconds.decimals. The DSECT field contains the value as a store clock (STCK). This field
is only set if this is an autoinstalled APPC connection that has been deleted,
that is, this field is only set in an unsolicited statistics (USS) record.
For all other types of connection and all other types of statistics record
the value will be nulls (x'00').
Reset characteristic: not reset
|
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![]() Reset characteristic: reset to zero ![]() |
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![]() Reset characteristic: reset to zero ![]() |
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![]() Reset characteristic: reset to zero ![]() |
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![]() Reset characteristic: reset to zero ![]() |
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![]() Reset characteristic: reset to zero ![]() |
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Notes:
|
Summary statistics are not available online.
DFHSTUP name | Description |
---|---|
Connection name | is the system entry defined by the CONNECTION definition
in the CSD or by autoinstall.
|
Connection netname | is the name by which the remote system is known in the
network--that is, its applid.
|
Access Method / Protocol | is the combined communication access method and protocol
used for the connection.
|
Average autoinstalled connection time | is the average autoinstalled connection time. This field
applies to autoinstalled connections and is summarized from the unsolicited
system entry statistics records only.
|
Send session count | is the last value encountered for the SENDCOUNT specified
on the CONNECTION definition. This field applies to MRO and LU6.1 connections
only.
|
Receive session count | is the last value encountered for the RECEIVECOUNT specified
on the CONNECTION definition. This field applies to MRO, LU6.1, and EXCI connections
only.
|
Average number of AIDs in chain | is the average number of automatic initiate descriptors
(AIDs) in the AID chain.
|
Average number of generic AIDs in chain | is the average number of AIDs waiting for a session to
become available to satisfy an allocate request.
|
ATIs satisfied by contention losers | is the total number of ATI requests (queued allocates)
that have been satisfied by contention loser sessions (primaries for LU6.1).
This is always zero for IRC system entries.
|
ATIs satisfied by contention winners | is the total number of ATI requests (queued allocates)
that have been satisfied by contention winner sessions (secondaries for LU6.1).
This field is the total ATIs when the system entry is for IRC.
|
Peak contention losers | is the peak number of contention loser sessions (primaries
for LU6.1) that were in use at any one time.
|
Peak contention winners | is the peak number of contention winner sessions (secondaries
for LU6.1) that were in use at any one time.
|
Total bids sent | is the total number of bids that were sent. A bid is sent
on an LU6.1 RECEIVE session only. This field is always zero for IRC and APPC
system entries.
|
Average bids in progress | is the average number of bids in progress. A bid is sent
on an LU6.1 RECEIVE session only. This field is always zero for IRC and APPC
system entries.
|
Peak bids in progress | is the peak number of bids that were in progress at any
one time. A bid is sent on an LU6.1 RECEIVE session only. This field is always
zero for IRC and APPC system entries.
|
Peak outstanding allocates
For more information see 1 |
is the peak number of allocation requests that were queued
for this system. For APPC this field contains only generic allocate requests.
|
Total number of allocates
For more information see 1 |
is the total number of allocate requests against this
system. For APPC this field contains only generic allocate requests.
|
Average number of queued allocates
For more information see 1 |
is the average number of queued allocate requests against
this system. For APPC this field is incremented only for generic allocate
requests.
|
Failed link allocates
For more information see 1 |
is the total number of allocate requests that failed due
to the connection being released, out of service, or with a closed mode group.
For APPC this field is incremented only for generic allocate requests.
|
Failed allocates due to sessions in use
For more information see 1 |
is the total number of allocate requests that failed due
to a session not being currently available for use. These requests get SYSBUSY
responses to the allocate. This field is incremented for allocates failing
with an AAL1 abend code. For APPC this field is incremented only for generic
allocate requests.
|
Maximum queue time (seconds) | is the last non-zero value encountered for the MAXQTIME
parameter specified on the CONNECTION definition. This value represents the
maximum time you require to process an allocate queue on this connection.
If the allocate queue would take greater than this time to process the entire
queue would be purged. This value only takes effect if the QUEUELIMIT value
has been reached.
|
Allocate queue limit | ![]() ![]()
|
Number of QUEUELIMIT allocates rejected | is the is the total number of allocates rejected due to
the QUEUELIMIT value being reached.
|
Number of MAXQTIME allocate queue purges | is the total number of times an allocate queue has been
purged due to the MAXQTIME value. A queue is purged when the total time it
would take to process a queue exceeds the MAXQTIME value.
|
Number of MAXQTIME allocates purged | is the total number of allocates purged due to the queue
processing time exceeding the MAXQTIME value.
If sessions have not been freed after this mechanism has been invoked then any subsequent allocate requests are purged and included in this statistic as the MAXQTIME purging mechanism is still in operation.
|
Number of XZIQUE allocates rejected | is the total number of allocates rejected by the XZIQUE
exit
|
Number of XZIQUE allocate queue purges | is the total number of allocate queue purges that have
occurred at XZIQUE request for this connection.
|
Number of XZIQUE allocates purged | is the total number of allocates purged due to XZIQUE
requesting that queues should be purged for this connection.
If XZIQUE has not overridden this mechanism (by response) then any subsequent allocate requests are purged and included in this statistic as the XZIQUE purging mechanism is still in operation.
|
File control (FC) function shipping requests | is the total number of file control requests for function
shipping.
|
Interval control (IC) function shipping requests | is the total number of interval control requests for function
shipping.
|
Program control (PC) function shipping requests | is the total number of program control link requests for
function shipping.
|
Transient data (TD) function shipping requests | is the total number of transient data requests for function
shipping.
|
Temporary storage (TS) function shipping requests | is the total number of temporary storage requests for
function shipping.
|
DL/I function shipping requests | is the total number of DL/I requests for function shipping.
|
Terminal sharing requests | is the total number of transaction routing commands. This
number is incremented on both regions when the transaction is routed, and
when the terminal I/O request is routed between regions. This field is not
supported for LU6.1.
|
Notes:
|
These statistics are collected only if you have an APPC connection defined in your CICS region, and they are then produced for each mode group defined in that connection. These statistics cannot be accessed online using the EXEC CICS COLLECT STATISTICS command. They are only produced for offline processing (written to SMF).
These statistics are mapped by the DFHA20DS DSECT. This DSECT is also used to map the mode entry totals records.
DFHSTUP name | Field name | Description |
---|---|---|
NOT IN THE DFHSTUP REPORT | A20SYSN | is the name of the APPC connection/system that owns this
mode entry. It corresponds to the system entry, defined by a CONNECTION definition
in the CSD or by autoinstall.
Reset characteristic: not reset
|
Mode name | A20MODE | is the mode group name related to the the intersystem
connection name above (A20SYSN). This corresponds to modename in the sessions
definition.
Reset characteristic: not reset
|
ATIs satisfied by contention losers | A20ES1 | is the number of ATI requests (queued allocates) that
have been satisfied by "contention loser" sessions belonging to this
mode group.
Reset characteristic: reset to zero
|
ATIs satisfied by contention winners | A20ES2 | is the number of ATI requests (queued allocates) that
have been satisfied by "contention winner" sessions belonging to this
mode group.
Reset characteristic: reset to zero
|
Current contention losers | A20E1RY | is the current number of "contention loser" sessions.
Reset characteristic: not reset
|
Peak contention losers | A20E1HWM | is the peak number of "contention loser" sessions
belonging to this mode group that were in use at any one time. There can be
sessions not defined (by the MAXIMUM parameter of CEDA) as "contention
winners" or "contention losers", and their states are dynamically
decided at bind time.
Reset characteristic: reset to current value
|
Current contention winners | A20E2RY | is the current number of "contention winner" sessions.
Reset characteristic: not reset
|
Peak contention winners | A20E2HWM | is the peak number of "contention winner" sessions
belonging to this mode group that were in use at any one time. There can be
sessions not defined (by the MAXIMUM= parameter of CEDA) as "contention
winners" or "contention losers", and their states are dynamically
decided at bind time.
Reset characteristic: reset to current value
|
Total bids sent | A20ESBID | is the number of bids that were sent on the sessions
defined to this mode group. A bid is sent on an APPC "contention loser"
session when there are no "contention winner" sessions available to
allocate.
Reset characteristic: reset to zero
|
Current bids in progress | A20EBID | is the number of bids that are in progress on the sessions
defined to this mode group. A bid is sent on an APPC "contention loser"
session when there are no "contention winner" sessions available to
allocate.
Reset characteristic: not reset
|
Peak bids in progress | A20EBHWM | is the peak number of bids that were in progress at any
one time, on the sessions defined to this mode group. A bid is sent on an
APPC "contention loser" session when there are no "contention
winner" sessions available to allocate.
Reset characteristic: reset to current value
|
Peak outstanding allocates
For more information see 1 |
A20ESTAM | is the peak number of allocation requests that were queued
for this mode group.
Reset characteristic: reset to current value
|
Total specific allocate requests
For more information see 1 |
A20ESTAS | is the number of specific allocate requests against this
mode group.
Reset characteristic: reset to zero
|
Total specific allocates satisfied
For more information see 1 |
A20ESTAP | is the number of specific allocates satisfied by this
mode group.
Reset characteristic: reset to zero
|
Total generic allocates satisfied | A20ESTAG | is the number of generic allocates satisfied from this
mode group. The allocates are made for APPC without the mode group being specified.
Reset characteristic: reset to zero
|
Queued allocates
For more information see 1 |
A20ESTAQ | is the current number of queued specific allocate requests
against this mode group. An allocate is queued due to a session in this mode
group not being available at this moment. This includes waiting for a bind,
a bid, or all sessions are currently in use.
Reset characteristic: not reset
|
Failed link allocates
For more information see 1 |
A20ESTAF | is the number of specific allocate requests that failed
due to the connection being released, out of service, or with a closed mode
group.
Reset characteristic: reset to zero
|
Failed allocates due to sessions in use
For more information see 1 |
A20ESTAO | is the number of specific allocate requests that failed
due to a session not being currently available for use in this mode group.
These requests get SYSBUSY responses to the allocate. This field is incremented
for allocates failing with an AAL1 abend code.
Reset characteristic: reset to zero
|
Number of XZIQUE allocate queue purges | A20EQPCT | is the total number of allocate queue purges that have
occurred at XZIQUE request for this mode entry.
Reset characteristic: reset to zero
|
Number of XZIQUE allocates purged | A20EZQPC | is the total number of allocates purged due to XZIQUE
requesting that queues should be purged (A20EQPCT) for this mode entry.
If XZIQUE has not overridden this mechanism (by response) then any subsequent allocate requests are purged and included in this statistic as the XZIQUE purging mechanism is still in operation. Reset characteristic: reset to zero
|
Maximum session count | A20ELMAX | is the maximum number of sessions that the definition
of the session group permits.
Reset characteristic: not reset
|
Current maximum session count | A20EMAXS | is the current number of sessions in the group (the number
"bound").
Reset characteristic: not reset
|
Maximum contention winners acceptable | A20EMCON | is the maximum number of sessions that the definition
of the session group permits to be contention winners.
Reset characteristic: not reset
|
Current contention losers in use | A20ECONL | is the number of contention loser sessions that are currently
in use.
Reset characteristic: not reset
|
Current contention winners in use | A20ECONW | is the number of contention winner sessions that are currently
in use.
Reset characteristic: not reset
|
Notes:
|
Summary statistics are not available online.
These statistics are collected only if you have an APPC connection defined in your CICS region, and they are then produced for each mode group defined in that connection.
DFHSTUP name | Description |
---|---|
Connection name | is the name of the APPC connection/system that owns this
mode entry.
|
Mode name | is the mode group name related to the intersystem connection
name above. It corresponds to the modename in the sessions definition.
|
ATIs satisfied by contention losers | is the total number of ATI requests (queued allocates)
that have been satisfied by "contention loser" sessions belonging
to this mode group.
|
ATIs satisfied by contention winners | is the total number of ATI requests (queued allocates)
that have been satisfied by "contention winner" sessions belonging
to this mode group.
|
Peak contention losers | is the peak number of "contention loser" sessions
belonging to this mode group that were in use at any one time. There can be
sessions not defined (by the MAXIMUM= parameter of CEDA) as "contention
winners" or "contention losers", and their states are dynamically
decided at bind time.
|
Peak contention winners | is the peak number of "contention winner" sessions
belonging to this mode group that were in use at any one time. There can be
sessions not defined (by the MAXIMUM= parameter of CEDA) as "contention
winners" or "contention losers", and their states are dynamically
decided at bind time.
|
Total bids sent | is the total number of bids that were sent on the sessions
defined to this mode group. A bid is sent on an APPC "contention loser"
session when there are no "contention winner" sessions available to
allocate.
|
Average bids in progress | is the average number of bids in progress.
|
Peak bids in progress | is the peak number of bids that were in progress at any
one time, on the sessions defined to this mode group. A bid is sent on an
APPC "contention loser" session when there are no "contention
winner" sessions available to allocate.
|
Peak outstanding allocates
For more information see 1 |
is the peak number of allocation requests that were queued
for this mode group.
|
Total specific allocate requests
For more information see 1 |
is the total number of specific allocate requests against
this mode group.
|
Total specific allocates satisfied
For more information see 1 |
is the total number of specific allocates satisfied by
this mode group.
|
Total generic allocates satisfied | is the total number of generic allocates satisfied from
this mode group. The allocates are made for APPC without the mode group being
specified.
|
Average number of queued allocates
For more information see 1 |
is the average number of queued specific allocate requests
against this mode group. An allocate is queued due to a session in this mode
group not being available at this moment. This includes waiting for a bind,
a bid, or all sessions are currently in use.
|
Failed link allocates
For more information see 1 |
is the total number of specific allocate requests that
failed due to the connection being released, out of service, or with a closed
mode group.
|
Failed allocates due to sessions in use
For more information see 1 |
is the total number of specific allocate requests that
failed due to a session not being currently available for use in this mode
group. These requests get SYSBUSY responses to the allocate. This field is
incremented for allocates failing with an AAL1 abend code.
|
Number of XZIQUE allocate queue purges | is the total number of allocate queue purges that have
occurred at XZIQUE request for this mode entry.
|
Number of XZIQUE allocates purged | is the total number of allocates purged due to XZIQUE
requesting that queues should be purged (Number of XZIQUE allocate queue purges)
for this mode entry.
If XZIQUE has not overridden this mechanism (by response) then any subsequent allocate requests are purged and included in this statistic as the XZIQUE purging mechanism is still in operation.
|
Notes:
|