minor, typos

docs/homog2d_manual.md

@@ -2171,7 +2171,6 @@ either with the dedicated keywords
 ([`polyline`](https://www.w3.org/TR/SVG2/shapes.html#PolylineElement)
 or [`polygon`](https://www.w3.org/TR/SVG2/shapes.html#PolygonElement)), or by using the
 [`path`](https://www.w3.org/TR/SVG2/paths.html#PathElement) element, that is much more general.
-<br>
 This import subsystem handles both the `polyline` , `polygon` and `path` elements.
 However, for the latter, the "curve" elements (SVG path commands C, S, Q, T) are not handled,
 the import code will throw if such a command is encoutered while importing a SVG path object.

homog2d.hpp

@@ -5910,6 +5910,7 @@ at 180° of the previous one.
 \todo 20230217: implement these:
 - https://en.wikipedia.org/wiki/Visvalingam%E2%80%93Whyatt_algorithm
 - https://en.wikipedia.org/wiki/Ramer%E2%80%93Douglas%E2%80%93Peucker_algorithm
+Also use the areCollinear() function
 */
 	void
 	minimize()
@@ -10331,6 +10332,8 @@ sortPoints( const std::vector<Point2d_<FPT>>& in, size_t piv_idx )
 - 1 --> Clockwise
 - 2 --> Counterclockwise
 
+\todo 20240326: this is subject to numerical instability, as it is based on differences.
+
 \todo 20230212: replace const value HOMOG2D_THR_ZERO_DETER with related static function
 */
 template<typename T>