Question: stopping computation

Is there a way to stop maple at a particluar line in a worksheet> I frequently have to compile my worksheet from the beginning up to whatever line I'm writing on (which may be in the middle of the file).  RIght now I'm highlighting all lines above my current one and clicking the ! symbol.  Is there a command I can type, which will allow me to click on the !!! button but will stop computation at the line on which the command is written? Continuously highlighting half my worksheet gets very tedius, and I'm not quick enough the press the stop button at a specific line.

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