If

Conditional execution of command lines.

Format:

if expression
true-statement block
[else
false-statement block ]
endif

e.g.:

if !search_scan( sname) 
  say char(7)" ERROR: sname does not exist, prtc... " 
  wait 
  end 
endif

It is tested whether the SCAN sname exists. If not, an error message is sent to the terminal preceded by the bell character. The program waits for a keystroke (wait without time specification) before the command file is finished (end).

Format:

if expression then statement

Description:

Single line if statement.

e.g.:

if(x > 1000) then interrupt_scan = 1