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CheckAbort
CheckAbort[
expr
,
failexpr
] evaluates expr, returning failexpr if an abort occurs.
CheckAbort absorbs any aborts it handles, and does not propagate them further.
CheckAbort works inside AbortProtect.
CheckAbort has attribute HoldAll.
See the Mathematica book: Section 2.5.13.
See also: Catch.
Further Examples
CheckAbort catches the Abort, and returns the value aborted.
In[1]:= 
a
Out[1]= 
The effect of the Abort is contained by CheckAbort, so the second Print is executed.
In[2]:= 
a
b
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