Thanks - You've actually made an interesting point: the F8 key does, in fact, seem to run only selected code, but I wasn't aware of this because on the 'Program' menu, the F8 key appears next to the 'Run' menu item and not the 'Run selection' menu item. So the F8 key is fine for my purposes, but I didn't realise due to the misleading menu interface in EG 4.3. Thanks very much for your help.
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