Improve comments.

1 files changed, 15 insertions, 15 deletions

diff --git a/main.js b/main.js
index f09ce31..6839369 100644
--- a/main.js
+++ b/main.js
@@ -58,34 +58,34 @@ registerProjection(proj4);
 const projection = getProjection('EPSG:3006');
 
 
-/* Lantmäteriet uses a tile-scheme where the origin (top-left corner) is
- * at N8500000 E-1200000 (SWEREF99 TM), where each tile is 256x256
- * pixels, and where the resolution at level 0 is 4096m per pixel
- * (each side is 1048.576km long).
+/* Lantmäteriet uses a tile-scheme where the origin (upper-left corner) is at
+ * N8500000 E-1200000 (SWEREF99 TM), where each tile is 256×256 pixels, and where
+ * the resolution at level 0 is 4096m per pixel (each side is 1048.576km long).
  *
  *     https://www.lantmateriet.se/globalassets/geodata/geodatatjanster/tb_twk_visning_cache_v1.1.0.pdf
  *     https://www.lantmateriet.se/globalassets/geodata/geodatatjanster/tb_twk_visning-oversiktlig_v1.0.3.pdf
  *
- * We set the extent to a 4x4 tiles square at level 2 (1024px =
- * 1048.576km per side) somehow centered on Norrbotten and Västerbotten,
- * and zoom in from there.  This represent a TILEROW (x) offset of 5,
- * and a TILECOL (y) offset of 2.
+ * We set the extent to a 4×4 tiles square at level 2 (1024px = 1048.576km per
+ * side) somehow centered on Norrbotten and Västerbotten, and zoom in from there.
+ * This represent a TILEROW (x) offset of 5, and a TILECOL (y) offset of 2.
  */
 const extent = [110720, 6927136, 1159296, 7975712];
 
-/* XXX using the topowebbcache WMTS is fine for testing (as it
- * doesn't require authentication) but not in production in a public
- * instance as doing so would violate its current terms of use (as
- * of January 2024 it's not CC0 open data).  See
+/* XXX using the topowebbcache WMTS is fine for testing (as it doesn't require
+ * authentication) but not in production in a public instance as doing so would
+ * violate its current terms of use (as of January 2024 it's not CC0 open data).
+ * See
  *
  *   https://www.lantmateriet.se/sv/om-lantmateriet/Rattsinformation/upphovsratt-och-publicering-av-lantmateriets-geografiska-information/
  *   https://www.lantmateriet.se/sv/kartor/vara-karttjanster/min-karta/#anchor-2
  *   https://help.locusmap.eu/topic/support-for-swedish-lantmateriets-min-karta-wms
  *
- *  More precise background maps might be available in the future
- *  as open data, though:
+ * More precise background maps might be available in the future as open data,
+ * though:
  *
- *    https://www.lantmateriet.se/sv/om-lantmateriet/press/nyheter/lantmateriets-arbete-mot-oppna-data-i-full-gang/
+ *   https://www.lantmateriet.se/sv/om-lantmateriet/press/nyheter/lantmateriets-arbete-mot-oppna-data-i-full-gang/
+ *   https://ext-geodatakatalog.lansstyrelsen.se/GeodataKatalogen/srv/swe/catalog.search#/map uses
+ *   https://api.lantmateriet.se/open/topowebb-ccby/v1/wmts/token/3c3a9cf47e7cb5ea24542d40d19698/?layer=topowebb&style=default&tilematrixset=3006&Service=WMTS&Request=GetTile&Version=1.0.0&Format=image/png&TileMatrix=7&TileCol=237&TileRow=155
  */
 const baseMapSource = new WMTS({
   url: undefined,