These two name prefixes are used, by convention, at the beginning of the name of any function called by the SCRIPT, COLUMN_SCRIPT, or COMPONENT_SCRIPT keywords. The function itself (for example, _fmtUMLAttr) usually provides a special formatting display of a property value (such as an attribute and all of its properties) on the symbol. The naming convention is as follows:

(for example, _fmtUMLAttr): The function itself exists in hard code and cannot be modified. Most functions in SAPROPS.CFG are this way. Hard-coding the function makes System Architect’s response faster.

(for example, fmtUMLAttr): Exists in the fmtscript.bas file in System Architect’s main executable directory.

To create your own functions, see SCRIPT.

In the example above, a script is called that is used to display attributes on a class diagram in a particular fashion (for example, if an attribute’s access property is “public”, + (plus sign) is placed before the attribute on the class symbol, and so on.