Forcing Indents

[Bruce Pourciau]

Now and then I would like to indent the first line of a paragraph that 
latex has left flush. For example, switching to a standard environment 
after a block quotation does not indent the first line. If this first 
line is still part of the paragraph which includes the block quotation, 
that's fine. But if this first line really is the first line of a new 
paragraph, then, at least in my opinion, the first line should be 
indented to signal the change in thought that accompanies a new 
paragraph.

But in any case, how can one produce an indent in the first line of a 
given single paragraph? I tried inserting \indent in ert before the 
first word, but that produced an error message: "undefined control 
sequence"

Bruce