All mainstream version control systems (e.g. cvs, perforce, git) are designed for text but otherwise language agnostic. They are unsuited to visual languages

All mainstream version control systems (e.g. cvs, perforce, git) are designed for text but otherwise language agnostic. They are unsuited to visual languages which don't have a textual equivalent. Existing visual languages might not have good version control, but you certainly can provide it. See http://austinhenley.com/pubs/Henley2016VLHCC_Yestercode.pdf http://austinhenley.com/pubs/Henley2016VLHCC_Yestercode.pdf