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Idea for finding startup files on Mac:
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(1) Installation places startup files in known location relative
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to application executable.
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(2) Application uses a resource (NULL as shipped) to locate its
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(3) If startup files are not found, application tries to find them
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relative to its initial current working directory. If found,
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application writes its resource, so they will be found next
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(4) User is instructed to double click on the application executable
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if resources are not found. This starts the app with cwd in the
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place where (3) will find the startup files.
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Idea for handling wide lines (which hang below and right - not centered):
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(1) Use SetOrigin to shift port origin by half linewidth before drawing.
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(2) Always construct and fill thick lines manually (necessary for