HP 3000 Manuals HP 3000 Manuals
Construct Categories
The generator constructs can be divided into categories which describe
their basic functions, as follows:
* System Dictionary Retrieval constructs retrieve information from the
System Dictionary. The information is retrieved and placed in the
generated output using parameter replacement.
You use the following constructs to retrieve System Dictionary
information:
#for/#endfor
#getent
#getrel
For example, you can use the #for construct to retrieve all of the
relationships of the relationship type you specify. The #for
construct, in addition to retrieving System Dictionary information,
performs looping.
* Flow of Control constructs let you specify the flow of control of
generated output, such as looping and conditional evaluations.
You use the following constructs for flow of control:
#entry/#endentry
#for/#endfor
#section
#returnvalue
#let
#include
#if/#else/#endif
#block/#endblock
#macro/#endmacro
#return
#while/#endwhile
For example, you can use the #if construct to perform conditional
evaluations.
* Output constructs let you control the appearance of generated
comments, text, and quoted strings.
You can use the following constructs for formatting:
#option
#comment
#description
#printerror
#printkeywords
An example of a construct which controls the appearance of generated
text is the #description construct. This construct lets you specify
the starting and ending columns for generated output and override
other format defaults. The #comment construct lets you include
in-line documentation. The #comment lines do not appear in the
generated output.
This chapter presents information on each of the above constructs and
their usage. When coding the constructs, remember that the construct
name must be preceded by the "#" sign. In textmode="COBOL" it must be in
column 7 or later. Otherwise, "#" may appear in any column.