🟨-added Tab function on various data structures.

🟨-added function to draw a colored line in text data structure.

🟨-function shift + up, down select lines to copy, cut and delete.

🟨-function ctrl + c to copy selected lines.

🟨-function ctrl + v to paste selected lines.

🟨-function ctrl + x to cut selected lines.

🟨-function ctrl + to select all.

🟨-function ctrl + backspace delete everything.

🟨-added more sprites.

🟨-The f5 key now makes a quick save.

🟨-added button to move systems and objects.