Programmable device providing visual feedback of balancing of opening and closing statements of programming structures and nesting level

A programmable device, comprising:

• a processor;
• an input device connected to the processor;
• a display connected to the processor and having a left edge;
• a program memory connected to the processor;
• and
• an instruction memory connected to the processor and storing instructions executable by the processor;
• the instruction memory including an integrated programming environment comprising instructions which, when executed by the processor, cause the processor to:
• receive at least two control structure opening statements, each having an associated control structure;
• assign a unique representation to each control structure of the at least two control structures;
• concurrently display each control structure opening statement in the unique representation assigned to the corresponding control structure beginning at a same line starting position at the left edge of the display or adjacent the left edge of the display;
• receive at least two control structure closing sequences;
• and
• associate each control structure closing sequence with one of the control structures.