Presenting with a mouse: hover over a screenshot for a magnifying lens and spotlight. The lens stays visible up to 120px outside the screenshot and magnifies its nearest edge. Move farther away to restore the screen. Click the small pencil button to expand the tools. Click it again to collapse them and leave the active tool; existing marks stay until Clear All or page navigation. Choose Annotate to draw, or Text to click a spot and type. Choose red or yellow for either tool. Text is 28px: Enter places it, Shift+Enter adds a line, and Escape cancels. In Text mode, drag a note to move it or double-click to edit. Stop drawing or Stop text returns to normal navigation. Clear All removes pen marks and text. Moving to another page clears marks and turns drawing off. The lens pauses while drawing.

Start learning follows Home, all ten systems and Profile using the supplied app screenshots. The guide buttons move between lessons; account actions happen in your own app.

1. Read the current instruction. The highlighted area shows where to look on the full screen. Its steady detail appears alongside it.
2. Use Next and Back to move through the whole course, including the next branch or chapter. The Systems dropdown lets you revisit a particular system without leaving the course.
3. Magnification shows a closer view of a screenshot. Original captures and fictional examples are labelled.

Resume learning returns to the course screenshot you most recently opened in this browser tab. The address preserves an exact step for reload, copying and browser Back/Forward. Your last course position is retained within this browser tab.

Use the page selector to find an approved lesson within a system. Left/Right arrow keys advance when focus is outside controls.

If an image cannot load, its screen description appears below it. Dark bars and [Hidden] conceal protected content.

All ten systems · Profile & next steps

Admin has its own guide and controls. About the sources explains evidence limits.