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### `.include` search path: `-I` path

Use this option to add a path to the list of directories `as` searches for files specified in `.include` directives (see `.include`). You may use `-I` as many times as necessary to include a variety of paths. The current working directory is always searched first; after that, `as` searches any `-I` directories in the same order as they were specified (left to right) on the command line.