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Displaying the language

The following commands help you find out which language is the working
language, and also what language source files were written in.
`show language'
     Display the current working language.  This is the language you
     can use with commands such as `print' to build and compute
     expressions that may involve variables in your program.
`info frame'
     Display the source language for this frame.  This language becomes
     the working language if you use an identifier from this frame.
     *Note Information about a frame: Frame Info, to identify the other
     information listed here.
`info source'
     Display the source language of this source file.  *Note Examining
     the Symbol Table: Symbols, to identify the other information
     listed here.
   In unusual circumstances, you may have source files with extensions
not in the standard list.  You can then set the extension associated
with a language explicitly:
`set extension-language .EXT LANGUAGE'
     Set source files with extension .EXT to be assumed to be in the
     source language LANGUAGE.
`info extensions'
     List all the filename extensions and the associated languages.