Section16.21

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## 16.21 )set

ugSysCmdset

set

User Level Required: interpreter

Command Syntax:

)set
)set label1 [... labelN]
)set label1 [... labelN] newValue

Command Description:

The )set command is used to view or set system variables that control what messages are displayed, the type of output desired, the status of the history facility, the way Axiom user functions are cached, and so on. Since this collection is very large, we will not discuss them here. Rather, we will show how the facility is used. We urge you to explore the )set options to familiarize yourself with how you can modify your Axiom working environment. There is a HyperDoc version of this same facility available from the main HyperDoc menu.

The )set command is command-driven with a menu display. It is tree-structured. To see all top-level nodes, issue )set by itself.

)set

Variables with values have them displayed near the right margin. Subtrees of selections have ``...'' displayed in the value field. For example, there are many kinds of messages, so issue )set message to see the choices.

)set message

The current setting for the variable that displays computation timings:displaying whether computation times timings:displaying are displayed is visible in the menu displayed by the last command. To see more information, issue

)set message time

This shows that time printing is on now. To turn it off, issue

)set message time off

set message time

As noted above, not all settings have so many qualifiers. For example, to change the )quit command to being unprotected (that is, you will not be prompted for verification), you need only issue

)set quit unprotected

set quit unprotected

Also See: )quit ugSysCmdquit.

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