Shared Variable Retract Offer R←⎕SVR Y

This system function terminates communication via one or more shared variables, or aborts shared variable offers that have not yet been accepted.

Y is a character scalar, vector or matrix. If it is a vector it contains a shared variable name and optionally its external name or surrogate separated from it by one of more blanks. If Y is a scalar, it specifies a single 1-character name. If Y is a matrix, each row of Y specifies a name and an optional external name as for the vector case.

The result R is vector whose length corresponds to the number of names specified by Y, indicating the level of sharing of each variable after retraction.

See Shared Variable State for further information on the possible states of a shared variable.