MODULE Add
CATEGORY User
DESCRIPTION Adds a number to a field
LOADABLE loadablelib 
INPUT data; field; (none); field to add to
INPUT addend; scalar; 0; value to add to field
OUTPUT result; field; result of adding value to field

MODULE MakeX
CATEGORY Annotation 
DESCRIPTION draws an X 
LOADABLE loadablelib 
INPUT input; field; (none); field to mark positions 
INPUT size; scalar; 1; size 
OUTPUT output;  field; field with positions marked 

