-Calc will read the formula (using the surrounding blank lines to
-tell how much text to read), then push this formula (invisibly)
-onto the Calc stack. The cursor will stay on the formula in the
-editing buffer, but the buffer's mode line will change to look
-like the Calc mode line (with mode indicators like @samp{12 Deg}
-and so on). Even though you are still in your editing buffer,
-the keyboard now acts like the Calc keyboard, and any new result
-you get is copied from the stack back into the buffer. To take
-the derivative, you would type @kbd{a d x @key{RET}}.
+Calc will read the formula (using the surrounding blank lines to tell
+how much text to read), then push this formula (invisibly) onto the Calc
+stack. The cursor will stay on the formula in the editing buffer, but
+the line with the formula will now appear as it would on the Calc stack
+(in this case, it will be left-aligned) and the buffer's mode line will
+change to look like the Calc mode line (with mode indicators like
+@samp{12 Deg} and so on). Even though you are still in your editing
+buffer, the keyboard now acts like the Calc keyboard, and any new result
+you get is copied from the stack back into the buffer. To take the
+derivative, you would type @kbd{a d x @key{RET}}.