I'm new to Maple and find some aspects of the syntax and UI confusing.  The manual isn't much help.  In the case of "e"...

1) If I type in:    evalf(e^1,10) by just typing the letter e from the keyboard, I get back the letter e.  But if I go into the palette and select the expression e^a, and put it in evalf that way (for a=1) I get back a numerical value for e.  I can see that one of these e's is italicized and one isn't...???

I have Maple 15.

I used one of the "Assistants" to solve a problem.

It offered me the command line code that would have solved the problem without the Assistant.

I saved that code to a file, and later tried to paste it into a new Worksheet.

It won't execute.  I can't convert it to anything that executes.

I assume Maple is viewing it as text, and not something that is executable.

sol1 := dsolve([diff(x(t),t) = y(t), diff(y(t),t) = -x(t), x(0) = 0, y(0) = 1...