*Conan The Librarian
Controls access to local and global symbols in command procedures. Format SET SYMBOL
|1 - Qualifiers|
1.1 - /ALL
/ALL (default) Specifies that the values of the /SCOPE qualifier pertain both to the translation of the first token on a command line and to general symbol substitution. The /ALL qualifier is incompatible with the /GENERAL or the /VERB qualifier.
1.2 - /GENERAL
Specifies that the values of the /SCOPE qualifier pertain to the translation of all symbols except the first token on a command line. The /GENERAL qualifier is incompatible with the /ALL or the /VERB qualifier.
1.3 - /SCOPE
/SCOPE=(keyword,...) Controls access to local and global symbols. Lets you treat symbols as being undefined. Possible keywords are as follows: NOLOCAL Causes all local symbols defined in outer procedure levels to be treated as being undefined by the current procedure and by all inner procedure levels. LOCAL Removes any symbol translation limit set by the current procedure level. NOGLOBAL Causes all global symbols to be inaccessible to the current procedure level and to all inner procedure levels unless otherwise changed. GLOBAL Restores access to all global symbols.
1.4 - /VERB
Specifies that the values of the /SCOPE qualifier pertain to the translation of the first token on a command line as a symbol before processing only. It does not affect general symbol substitution. NOTE Caution must be used if the SET SYMBOL/VERB/SCOPE command is used more than once in a command procedure. Because DCL uses the translation behavior when looking for a label or subroutine, execution may be different running in one mode than in another. Compaq recommends that the SET SYMBOL/VERB/SCOPE command be used once as part of the command procedure setup and left in that mode for the duration of the procedure. The /VERB qualifier is incompatible with the /ALL or the /GENERAL qualifier.
|2 - Examples|
1.$ SET SYMBOL/SCOPE=NOLOCAL In this example, all local symbols defined in outer procedure levels are now undefined for the current procedure level and all inner procedure levels. 2.$ SET SYMBOL/SCOPE=NOGLOBAL In this example, all global symbols are now inaccessible to the current procedure level and all inner procedure levels unless otherwise changed. 3.$ NOW :== SHOW TIME $ ! $ NOW 3-NOV-2001 11:48:58 $ ! $ SET SYMBOL /VERB /SCOPE=NOGLOBAL $ NOW %DCL-W-IVVERB, unrecognized command verb-check validity and spelling \NOW\ $ ! $ SHOW SYMBOL NOW NOW == "SHOW TIME" This example demonstrates the use of the /VERB qualifier. The symbol NOW is assigned to the SHOW TIME command. The next line shows the default behavior, where DCL attempts to translate the first string on the command line (NOW). Because NOW translates to the SHOW TIME command, this is used instead of NOW. The SET SYMBOL command on the next line changes the behavior so that DCL does not attempt a translation. When NOW is subsequently entered, DCL uses the string NOW as the command verb and cannot find it in the command table. This results in the error message. Notice that the scoping of the verb translation has no effect on general symbol translations, as demonstrated by the SHOW SYMBOL command in the example.