Cancel an active brush stroke with right mouse by default. Assign a different key or key combination in Configuration → Cancel brush stroke. Cancel restores the board without adding an undo action.
Tool options: Pressure on opacity and Pressure on size are independent. The opacity slider is the maximum; pressure affects new marks. Choose a grouped brush Blending mode to change how pen/pixel/shape paint mixes with the active layer. Wash preserves the highest coverage at each pixel; Build-up accumulates.
B pen · E eraser · T text · F fill · I picker
Pan: drag tool, Space + drag, or middle mouse. Pan tool: right-drag up/down for smooth anchored zoom. Zoom: mouse wheel with the pan tool, +/−, or the zoom percentage. The wheel changes size with drawing/text tools; the selection cursor stays fixed. Fit and center are in the bottom bar.
Text: selecting the tool starts typing immediately; type under your cursor, then click to stamp. Clicking with an empty draft pauses typing and shows the Click or Enter hint. Enter clears a nonempty draft or toggles typing when empty; Escape clears the draft. Mobile: taps open typing without pasting; hold one finger to move the text cursor. Tap Enter to clear, hold Enter for 0.5 seconds to paste. The ↵ button supports holding on touch keyboards. Two fingers pan and zoom. The bottom tool-rail button toggles mobile optimizations. Maximum 200 characters, one line. Text and blur support ordinary undo/redo. Snapshots save all layers and visibility, with separate undo/redo controls.
Load image: choose or drop a local file. Move, resize, rotate or flip its centered preview, then Confirm or Enter to place it. Cancel or Escape discards it. Existing drawing is preserved; confirmation is undoable.
Selection supports lasso, rectangle, polygon and magic color areas. Clear, Fill, Move, Clone, Save and Cancel are available. Before Move/Clone, dragging and handles adjust only the selection boundary. Move/Clone: drag, resize or rotate artwork, then Apply or Enter. Lock preserves proportions by default; MANUAL reveals W/H/Angle controls. Escape cancels. Blend averages colors inside a circular brush and paints them back onto the active layer; opacity controls strength. Custom brush: choose the custom tool, open Brush gallery and select a preset. Edit spacing, angle, scatter, pressure, flow and blend mode; test it in the scratchpad, import local tips/presets, or draw your own tip. Animation is not ported yet. Rotation and Flip change only your local view; input stays aligned with the artwork and exports keep document orientation.