Give me a break
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Here are how to quit and suspend Mew and how to erase a mode(buffer).
<Summary mode and Virtual mode>
`q'
Suspend Mew then switch to another buffer. All buffers of Mew
retain, so you can resume with buffer operations.
`Q'
Quit Mew. All buffers of Mew are erased.
`C-cC-q'
Erase the current mode(buffer).
<Draft mode>
`C-cC-q'
Erase the draft.
<"*Mew watch*" buffer>
`C-cC-q'
Erase the current buffer.