Write naturally. Pencil or mouse draws — your finger pans and zooms, so you can rest your hand.

Smart PM widgets. Tap the tool (or press B) for an activity box and (or C) to link boxes, then Solve reveals the critical path.

Practise like the exam. Fill ES/EF/LS/LF yourself and hit Check — every cell is marked ✓/✗, and tapping a box explains any mistake. Answers use the day-0 convention (first ES = 0, EF = ES + DUR).

Your notebooks save automatically. They stay on this device unless you sign in under My notebooks to sync across devices. Use ⋯ › Backup this notebook for a file copy.