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- source fileName
- Read file fileName and pass the contents to the Tcl
- interpreter as a sequence of commands to execute in the
- normal fashion. The return value of source is the
- return value of the last command executed from the
- file. If an error occurs in executing the contents of
- the file, then the source command will return that
- error. If a return command is invoked from within the
- file, the remainder of the file will be skipped and the
- source command will return normally with the result
- from the return command. If fileName starts with a
- tilde, then it is tilde-substituted as described in the
- Tcl_TildeSubst manual entry.
-