Visually represent the PERFORM THRUs

[FALLAI-Denis]

Hi,

In addition to request #31, regarding PERFORMs, there should also be a way to identify PERFORM THRUs which chain several paragraphs or sections (and paragraphs within sections).
For this, a particular type of link could be established between the chained paragraphs / sections:

• at the caller level: a specific link to the 1st paragraph / section called
• at the level of the paragraphs / sections called: a particular link between these paragraphs / sections, step by step, according to the order of execution (which is also the order of declaration)

[zimlu02]

related to #4