A wire split counts as 1 script towards the limit. Thus the script in image A adds 4 scripts (3 script blocks + 1 wire split) to the counter.

But wire splits are defined as "n to 1" and "1 to n". This basically means, no matter how large the split is, it will add only 1 script to the counter. The script in image B adds 10 scripts (9 script blocks + 1 wire split) to the counter.

The same applies in case of joining. The script in image C counts as 4 scripts, whereas the script in image D counts as 10 scripts.

#### Pointer dereferencing

This section will be easier to understand if you are somewhat familiar with the concept of pointers. If you are not, you can think of them as an address. Specifically, a memory address, that points to a variable.

When a pointer is dereferenced, i.e. converted to value, it counts as 1 script. In image E, the Get Variable block outputs a pointer, which is then dereferenced to a value for the Negate block. Thus the script adds 3 scripts (2 script blocks + 1 pointer dereference) to the counter.

This behaviour, when combined with wire splitting, results in a peculiar quirk where adding another script block can actually consume less script limit than without that block. In the following picture, case 1 adds 8 scripts (4 script blocks + 1 wire split + 3 pointer dereferences) to the counter. Almost half of them are just from dereferencing. To avoid that, in case 2 another script block is added to dereference the pointer before the split. Thus case 2 only adds 7 scripts (5 script blocks + 1 wire split + 1 pointer dereference) to the counter.

Known script blocks that output a pointer are all the Get Variable and List Element blocks.

Known script blocks that accept a pointer as input are the Variable inputs of the List Element blocks, the Variable input of the Menu Item block and, increment and decrement block.

#### Inside custom scripts