Rest assured it isn't that 30k capacity cock and bull story, I've just loaded in a 44.75k file and it still operates smoothly.

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* Loaded script 'C:\Documents and Settings\Andy\Desktop\mIRC\test.mrc'
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test.mrc has a capacity of 44.75k
//load -rs test.mrc | //echo -a test.mrc has a capacity of $bytes($file(test.mrc),k) $+ k