Lines that are part of a sourcecode environment will be displayed without conversion when converting to one of the source code formats. When converting to one of the other destination formats, these lines will be displayed like being part of a verbatim environment inside a quote environment.
A small example for a C source code with UDO:
!docinfo [program] Hello, world! !docinfo [author] Dirk Hagedorn !begin_document !node Hello, World This program is just for demonstrating the sourcecode environment. !begin_sourcecode #includeint main ( void ) { printf("Hello, world!\n"); return 0; } !end_sourcecode !end_document
Another possibility to include source code is offered by the command !sinclude.