test

   'test' ['d'|'v'|'n'|'e'|'p'|'l'|'c'|'s'|'b'|->
           'S'|'L'|'se'|'sh' <entity-name>] | ->
          ['file' <file> [<">string<">]]  | ->
          ['i' <set1> <set2>] | ->
          ['o' <set>|<node>]

A boolean opperation. Usually tests the existence of a given entity (watch the '\' which prevents the value beeing replaced by its content!):

test v \value

And it checks if and which nodes included in set1 are inside the elements included in set2:

test i nodeset elemset

It returns TRUE or FALSE and the amount of nodes inside the elements of set2 and stores the nodes in the special set ”-included”.

Or it tests the observability 'o' of a certain node under the given orientation of the model. The node can be given as a member of a set or directly by its node-nr.

The existence of a file or the existence of a certain string in a given file can be checked:

test file filename.txt “HELLO”

The command returns TRUE or FALSE and writes it to the ”stack”.