Grrr...

I haven't knit a stitch for ages, and then all of a sudden I started to miss it terribly. So I picked up the Entrelac shawl. Entrelac can be tricky, but it came right back to me... until I hit the edge.
For the life of me I couldn't remember how to do an edge triangle. After frogging three attempts I did what I should have done in the first place: looked it up.
Thank goodness I saved a link to the explanation under a Flickr photo:

Start with the left leaning triangle.
k2
sl 1, p1
sl 1, inc 1, ssk w/ next live stitch,
and so on...
You will make the same sideways triangle as before: slip 1, increase, work to end and join with the next live stitch; turn, slip and work back uphill - but this time you will increase and do your joining on the knit side, and purl back.
Aaahhh. Of course!

Update: Yes! Passed the edge.

ETA: some more knitting notes:
Colour sequence: 225 - 8 - 203 - 245 - 84 - 228 - 84 and back again

Binding off as you go - the last set of triangles
Make the beginning triangle the same as any beginning triangle, until you get 5 stitches on the left needle. Then sl 1, inc 1, bind off those two, then bind off the remaining stitches of the beginning triangle as you knit each one, except for the last stitch.

Pick up 6 stitches down the next valley, as usual. You will have 7 stitches on the left needle, one from the beginning triangle, and 6 from the current pickup.

slip 1, work 5 to the left, turn and bind off the last 1 of the picked up stitches with the remaining stitch from the beginning triangle.
slip 1, work 5 to the right and join to the next live stitch as usual.
slip 1, work 6 to the left, turn, and bind off 1 stitch
slip 1, work 5 to the right and join to the next live stitch

Continue doing this, as if making the usual rectangle but binding off one stitch each time you come to "the top of the hill" until you have bound off the entire 6 stitch section, leaving only 1 stitch on the needle, then pick up for the next section and so on, until all stitches are bound off.