Possible Clues:

• Suited to the circumstances
• Old writer about to end tale at first profitable
• Extend pie - it is suitable for its purpose
• Appropriate though not necessarily fair
• Fitting something for emergency use
• Handy means, short of time, to hurry along books
• Having mark removed from old gable is appropriate
• Endlessly speed up printing unit brought in for shift
• Convenient means to remove marks from old part of Parthenon?
• Appropriate first bit of marble from former part of Greek temple