Inserting in-text arrows.

An in-text arrow is one which you include in a line of text, like for example when you write:

Let f : A$\mono$B be a monomorphism ...
Here are the available in-text arrows and the corresponding commands. The length of an in-text arrow is 20pt.

plain arrow ++  
dotted arrow ++  
monomorphism ++  
epimorphism +"221-12mu"221+ "221-12mu"221
bimorphism ++  
isomorphism ++  
pair of parallel arrows ++  
equality ++  
pair of adjoint arrows ++  


When you insert an in-text arrow, the Diagram Macros will take care of the spacing at both ends of the arrow. The in-text arrow commands can be used both in paragraph and in Math mode, but normally you should use them in Math mode to print the surrounding characters in Math italic. Compare indeed
+Let f:A"221-12mu"221B be an epimorphism + Let f:A"221-12mu"221B be an epimorphism

with
ll +Let f : A$\mathchar$"221$\mkern$ - 12mu$\mathchar$"221B be an epimorphism+ &Let f : A$\mathchar$"221$\mkern$ - 12mu$\mathchar$"221B be an epimorphism