Alpha provides different ways of performing spell checking on a document.
The functionalities are found in the Edit ↣ Spelling menu.
When you use one of the spell checking commands for the first time, you
are asked to select a spell checking service. Currently there are two
choices:
With both services, the interaction between the text and the spell checker
takes place in a Spelling Panel which displays the misspelled words
and suggests corrections.
If you choose the external solution (Aspell), the corresponding
program must be installed on your machine.
The Alpha and Aspell services allow you to specify a
particular language: there is a Dictionaries submenu in the Edit ↣ Spelling menu with all the dictionaries
currently available on your machine. Note that Alpha and aspell each have
their own set of dictionaries, so the list of dictionaries found in the
Dictionaries submenu differs depending on which service is currently
selected.
How do I change the spell checker ?
The easiest way to change the spell checker is to use the menu item
Edit ↣ Spelling ↣ Select Spelling Service.
Alternatively, you can select the Alpha ↣ Global Setup ↣ Helper Applications menu item, select the Miscellaneous panel, find the Spellcheck Services section and
click on the corresponding arrow to choose another service.
Both spell checkers are "smart". This means that they (automatically) adapt
themselves to the mode of the document and in particular are clever enough
to spell check (La)TeX documents without being disturbed by the TeX markup
(macros, environments, etc.).
Similarly, in HTML and XML documents, the spell checkers will not be
misled by the tags and attributes of the markup language.