I was working through the manual for the PDP-1 and in the part about DDT, entering in a Hello World program, when you talk about enterning in the text with the double quote trick, you don't show where the double quotes go. Currently it reads
Type hel Backspace low Backspace orl Backspace. The double-quote tells DDT to store the 3 characters as one word in memory.
I think it should read as
Type hel" Backspace low" Backspace orl" Backspace. The double-quote tels DDT to store the 3 characters as one word in memory.