Open core: don’t reinvent the wheel — build your fenestration software on ours.

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Turning the buttons on
The V / H / × buttons are hidden until the company preference Show cross-section buttons
(V / H / X)
(Company Preferences → Quoting & order entry) is switched on. It is off for
every company by default; turn it on once the series have their X-section parts and rules, then
re-open the item. The desktop designer draws the sections beside the design. On the web the cuts are drawn on the key of a cross-section sheet instead, and the drawing tab only points there.

With setup done, cross-sections are a three-button feature on the designer’s top strip (the
icon row with view and undo):

Button Action
V Start a vertical cross-section (a cut straight up/down through the design; the section draws to the right of the design).
H Start a horizontal cross-section (a cut across the design; the section draws below it).
× Hide all cross-sections. Nothing is deleted — pressing V or H brings the same drawings back.

The two-click cut line

  1. Press V or H. The next two canvas clicks define where the cut is taken.
  2. Click 1 — start of the cut line. Click 2 — end of the cut line. The line is
    snapped axis-aligned (a V line stays perfectly vertical, an H line perfectly horizontal) and may
    extend just past the design’s edge.
  3. The cut line is labelled with a letter (A, B, C…) and the section
    appears immediately: the section images placed by your rules, plus dimension lines — overall C
    and per-opening C / B / BA / A dims, frame and sash dims, and the glass dim — in the active
    unit of measure.

Each additional press of V or H (followed by its two clicks) adds another labelled
section line; sections offset themselves so they don’t overlap earlier ones. Sections are an
overlay on the main canvas — they can’t be dragged; to move a section, hide and re-draw it at a
new cut position. Everything is computed on the spot from the design in front of you — there is
no save/load step and no server round-trip. Unglazed openings contribute no glass section.