6.6 Querying a Dictionary
When creating a new argument, it may be useful to ask the dicitonary
what entries are already set there, and conditionally create new
entries based on those.
In this way, a template author can get additional logic through more
— Function: srecode-dictionary-lookup-name dict name
Return information about the current DICT's value for NAME.
DICT is a dictionary, and NAME is a string that is the name of
a symbol in the dictionary.
This function derives values for some special NAMEs, such as FIRST