-to a field; its job is to bundle these into an allocated argument-block
-object which can later be passed to validation predicated.
-The other two hook arguments should copy and free argument-block structures.
-They will be used by the forms-driver code.
-You must supply the \fImake_arg\fR function,
-the other two are optional, you may supply NULL for them.
-In this case it is assumed
+to a field.
+It stores the arguments in an allocated argument-block
+object which is used when validating input.
+.TP 5
+\fIcopy_arg\fR
+This function may be used by applications to copy argument-blocks.
+.TP 5
+\fIfree_arg\fR
+Frees an argument-block structure.
+.PP
+You must supply the \fImake_arg\fR function.
+The other two are optional: you may supply NULL for them.
+In this case, the form library assumes