INCLAN: echo
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The echo variable determines which commands are echoed, i.e. copied to standard output before execution.
The possible settings are:
- off
- Commands are not echoed.
- NULL(or not set at all)
- In macros, all commands except those built into the command line interpreter are echoed; interactive commands are not echoed.
- on
- Commands that are not built into the command interpreter are echoed regardless of whether they occur in macros or interactively.
- large
- Same as on, except that the echo is surrounded by blank lines.
- full
- All commands are echoed, and the corresponding line numbers in macros are given.
Labels are not included in the echo, but variable substitutions are. Statements preceded by "@" are only echoed if echo has the value full.