What it draws
The Double Curve draws an S-shaped line with two bends between its endpoints, controlled by two shaping points. It captures paths that change direction twice, which a single curve cannot express.
How to draw it
- Pick Double Curve from the left toolbar (Shapes group).
- Click to set the first endpoint and click again for the second, then position and click the first control point to set the initial bend, and position and click the second control point to set the opposite bend and finish.
How traders use it
- Sketch a projected pullback-then-continuation path, curving down into support and back up toward the target.
- Illustrate a rounded transition from downtrend through a base into an uptrend in one flowing annotation.
- Trace the S-shaped route price took through a choppy reversal when writing up a session review.
Settings reference
Double-click the drawing (or use its floating toolbar → gear) to open settings:
| Setting | Control | Possible values | Default | Effect |
|---|---|---|---|---|
| Extend | multi-select | Extend left line | Extend right line (dropdown summarizes as Don't extend / Extend left line / Extend right line / Extend both) | Don't extend | Extends the line past its anchor points to the left and/or right edge of the chart. |
| Color | color | any color (theme color picker) | #05B878 | Main stroke color of the drawing — lines, outlines and (unless overridden) labels derive from it. |
| Line Width | select | 1px | 2px | 3px | 4px | 2px | Stroke thickness of the drawing’s lines and outlines. |
| Line Style | select | Solid | Dashed | Dotted | Solid | Dash pattern used for the drawing’s lines. |
| Fill Background | checkbox | on/off | off | Fills the area enclosed by the curve. |
| Background Color | color | any color | same as line color | Fill color used when Fill Background is on. |
| Opacity | slider | 0–100 | 20 | Opacity of the curve’s background fill. |
| [Tab] Text — Text | checkbox + textarea | on/off, with a multiline text box for the label content | off (on when the drawing already carries text) | Enables an attached text label on the drawing; typing in the box auto-enables it and updates the label live. |
| [Tab] Text — Text Color | color | any color | same as the drawing’s line color | Color of the attached text label. |
| [Tab] Text — Font Size | select | 8, 10, 11, 12, 14, 16, 18, 20, 24, 28, 32, 36, 48, 64, 72 | 14 | Point size of the attached label text. |
| [Tab] Text — Bold | checkbox | on/off (B toggle button) | off | Renders the label in bold. |
| [Tab] Text — Italic | checkbox | on/off (I toggle button) | off | Renders the label in italics. |
| [Tab] Text — Word Wrap | checkbox | on/off | off | Wraps long label text onto multiple lines instead of one long line. |
| [Tab] Text — Text alignment (vertical) | select | Top | Middle | Bottom | Top | Vertical placement of the label relative to the drawing. |
| [Tab] Text — Text alignment (horizontal) | select | Left | Center | Right | Center | Horizontal placement of the label relative to the drawing. |
| [Tab] Coordinates | number + datetime | one row per anchor point: price (number, step 0.05) and local date/time | the drawing’s current anchor values | Edits anchor geometry numerically — changing a point’s price or time moves the drawing live on the chart. |
| [Tab] Visibility | checkbox + number range | interval buckets: Ticks; Seconds 1–59; Minutes 1–59; Hours 1–24; Days 1–366; Weeks 1–52; Months 1–12; Ranges (each bucket has an on/off checkbox, most also a from–to range) | visible on all intervals | Per-timeframe visibility rules — untick a bucket to hide the drawing on those chart resolutions, or narrow the from–to range within a bucket. |
Editing & managing
- Move / adjust: drag the drawing or any anchor handle; magnet mode snaps points to OHLC values.
- Clone / lock / hide / delete from the floating toolbar or right-click menu.
- Templates: save the current style from the settings dialog and reapply it to new drawings.
- Every action is undoable (⌘Z / Ctrl+Z).
Watch out for
- With two bends to fit, the double curve is even easier to over-fit to past data than a single curve, so use it for illustration rather than prediction.