Choose insertion before/after a character, at a line boundary, or on a new line.
Before this lesson: Reach a line or buffer boundary.
i inserts before the cursor; a after it. I starts at the first nonblank character; A at the end. o opens below; O opens above, even above the first line. Esc completes every insertion. New code lines may inherit indentation; inspect it rather than adding spaces blindly.
From anywhere on “review”, A then “ today” then Esc makes “review today”. O then “Plan” then Esc adds a separate line above. I would add text to the existing line instead.
// review
// review today
Use Reset to try again.
","teaches":["door-i","door-a","door-I","door-A","door-o","door-O"],"introduces":["a","I","A","o","O"],"constraints":[],"drills":[{"task":"Add “brief ” before the message; keep the rest.","hint":"Compare the desired result with the starting text. Preserve the surrounding text.","mode":"jsx","start":"const message = \"Read short reports\";","startCursor":{"line":0,"ch":17},"paths":[{"keys":["i","brief ","Choose insertion before/after a character, at a line boundary, or on a new line.
Before this lesson: Reach a line or buffer boundary.
i inserts before the cursor; a after it. I starts at the first nonblank character; A at the end. o opens below; O opens above, even above the first line. Esc completes every insertion. New code lines may inherit indentation; inspect it rather than adding spaces blindly.
From anywhere on “review”, A then “ today” then Esc makes “review today”. O then “Plan” then Esc adds a separate line above. I would add text to the existing line instead.
# review
# review today
Use Reset to try again.
","teaches":["door-i","door-a","door-I","door-A","door-o","door-O"],"introduces":["a","I","A","o","O"],"constraints":[],"drills":[{"task":"Add “brief ” before the message; keep the rest.","hint":"Compare the desired result with the starting text. Preserve the surrounding text.","mode":"python","start":"message = \"Read short reports\"","startCursor":{"line":0,"ch":11},"paths":[{"keys":["i","brief ","Choose insertion before/after a character, at a line boundary, or on a new line.
Before this lesson: Reach a line or buffer boundary.
i inserts before the cursor; a after it. I starts at the first nonblank character; A at the end. o opens below; O opens above, even above the first line. Esc completes every insertion. New code lines may inherit indentation; inspect it rather than adding spaces blindly.
From anywhere on “review”, A then “ today” then Esc makes “review today”. O then “Plan” then Esc adds a separate line above. I would add text to the existing line instead.
review
review today
Use Reset to try again.
","teaches":["door-i","door-a","door-I","door-A","door-o","door-O"],"introduces":["a","I","A","o","O"],"constraints":[],"drills":[{"task":"Add “brief ” before the message; keep the rest.","hint":"Compare the desired result with the starting text. Preserve the surrounding text.","mode":"text/plain","start":"Message: Read short reports","startCursor":{"line":0,"ch":9},"paths":[{"keys":["i","brief ","