## CONTROL | Welcome Gallery Handbook |
| Manual page for CONTROL(PL)

## `#control` attribute`` value

## DESCRIPTION

Set various operational modes.`` Note: This is part of the general script processing package and has little use in the ploticus context.``

## ATTRIBUTES

attribute may be one of:

evalvars

  value should be `no` to turn off evaluation of variables and `yes` to turn it on. Default is `yes`.``

dot_in_varnames

  If value is `yes`, variable names may contain periods (.). If value is `no`, period will be used as a delimiting character when scanning variable names in the script, and variable names cannot contain any periods. The default is `no` unless sql database functionality is included in which case the default is `yes` (since sql join result field names contain periods).``

suppressdll

  value should be `yes` to suppress data-less lines, and `no` to show data-less lines. Default is `no`. A data-less line is a line having one or more variables, all of which evaluate to a zero-length value.`` Suppressing data-less lines is sometimes useful, for example, when displaying multi-line entities such as postal addresses.``
  data display engine
  Copyright Steve Grubb

Markup created by unroff 1.0, `` `` August 31, 2001.