Special variables: Difference between revisions
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m →{{header|REXX}}: re-instated use of USED instead of REUSED, removed arg() --- not a variable, but a function, re-listed the 3 special variables, re-instituted the original wording to make it clear what special variables are. -- ~~~~ |
m →{{header|REXX}}: added a note about SIGNAL ON|OFF which don't transfer control. -- ~~~~ |
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<br>If no subroutines have been invoked, then the '''RESULT''' special variable isn't defined. |
<br>If no subroutines have been invoked, then the '''RESULT''' special variable isn't defined. |
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<br>If no SIGNAL or CALL (or subroutine invocation) has been used, then the '''SIGL''' special variable isn't defined. |
<br>If no SIGNAL or CALL (or subroutine invocation) has been used, then the '''SIGL''' special variable isn't defined. |
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<br>: (This excludes the use of '''SIGNAL ON xxx''' and/or '''SIGNAL OFF xxx''' instructions which don't actually transfer control). |
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In each case, the variable names may be in lower/upper/mixed case. |
In each case, the variable names may be in lower/upper/mixed case. |
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