Formation of variable names

The SDF data types <composed-name> and <structured-name> are used for variable names and partial variable names in SDF-P in the command syntax. However, the syntax checked by SDF-P is restricted in comparison with these data types and is therefore described here in more detail.

A variable name (composed-variable-name) in SDF-P consists of one or more structure names (structured-variable-name) separated from each other by periods. The period in each case marks the name of a substructure. Blanks are not permitted within a variable name.

composed-variable-name:=structured-variable-name[.structured-variable-name]

Length                           at least 1 character, not more than 255 characters

A structure name consists of a partial variable name (pvn) which, if it refers to a list element or an array element, may be followed by a # and an index name.

structured-variable-name := pvn [# [indexname]]

Length Partial variable Character set	at least 1 character, not more than 20 characters name (pvn): all letters (A, ... Z) all digits (0, ... 9) @ and hyphen (-)
First charactern Conventions	a letter The string SYS at the beginning of a variable name is reserved for system variables, and should not be used. A hyphen may not be directly followed by another hyphen. The hyphen must not be the last character of the partial variable name..

If the structure name refers to a list element or an array element, it is followed by a # and an index name.

indexname = <integer -2147483648..2147483647> / pvn