this type is used to classify operations in the dropdown menu
the name of the category for all associated operations (e.g. block, structure)
a description of that category to show on screen
an array of all the operations associated with this category
this type is used to classify operations in the dropdown menu
Param: category
the name of the category for all associated operations (e.g. block, structure)
Param: dx
a description of that category to show on screen
Param: ops
an array of all the operations associated with this category