Choosing a punctuation level of None would, as you expect, cause no punctuation to be spoken. Note, however, that special symbols such as subscripted and superscripted numbers, Unicode fractions, and bullets are still spoken at this level, even though some might consider these types of symbols punctuation.

Choosing a punctuation level of Some causes all of the previously-mentioned symbols to be spoken. In addition, Cthulhu will speak known mathematical symbols, currency symbols, and "^", "@", "/", "&", "#".

Choosing a punctuation level of Most causes all of the previous-mentioned symbols to be spoken. In addition, Cthulhu will speak all other known punctuation symbols other than "!", "'", ",", ".", "?".

Choosing a punctuation level of All, as expected, causes Cthulhu to speak all known punctuation symbols.

Checking this checkbox causes Cthulhu to only speak actual text displayed on screen. This option is intended primarily for low vision users and users with a visual learning disability.

Default value: not checked

If the Speak blank lines checkbox is checked, Cthulhu will say "blank" each time you arrow to a blank line. If it is unchecked, Cthulhu will say nothing when you move to a blank line.

Default value: checked

When working with code or editing other documents it is often desirable to be aware of justification and indentation. Checking the Speak indentation and justification checkbox will cause Cthulhu to announce this information.

Default value: not checked

The misspelled-word indicator is the red squiggly line that appears underneath misspelled words in editable text fields. If Speak misspelled-word indicator is checked, when you navigate into a word with this indicator, or type a word incorrectly causing this indicator to appear, Cthulhu will speak "misspelled."

Default value: checked

If the Speak object mnemonics checkbox is checked, Cthulhu will announce the mnemonic associated with the object with focus (such as AltO for an OK button).

Default value: not checked

Checking the Speak child position checkbox will cause Cthulhu to announce the position of the focused item in menus, lists, and trees (e.g. "9 of 16").

Default value: not checked

If the Speak tutorial messages checkbox is checked, as you move amongst objects in an interface, Cthulhu will provide additional information, such as how to interact with the currently-focused object.

Default value: not checked

If the Speak description checkbox is checked, as you move amongst objects in an interface, Cthulhu will speak the accessible description in addition to the accessible name of the object.

Default value: checked

If System messages are detailed is checked, Cthulhu will present detailed messages to you in speech. For instance, if you use Cthulhu's command to change echo, Cthulhu might speak "Echo set to word." If you would prefer shorter messages, such as simply "word," you should uncheck this checkbox.

Default value: checked

If Speak colors as names is checked, Cthulhu will describe colors, looking for the closest approximate. For instance, RGB 0, 27, 51 would be spoken as "midnight blue." If you would prefer to hear the exact RGB value, you should uncheck this checkbox.

Default value: checked

If Announce blockquotes during navigation is checked, Cthulhu will tell you when you navigate into or out of a blockquote. Note that this setting is independent of whether or not this announcement is made during Say All. See Announce Contextual Information in Say All for more information.

Default value: checked

If Announce forms during navigation is checked, Cthulhu will tell you when you navigate into or out of a form. Note that this setting is specific to forms which are not ARIA landmarks. You can configure the presentation of ARIA landmarks through the Announce landmarks during navigation checkbox. In addition, note that this setting is independent of whether or not this announcement is made during Say All. See Announce Contextual Information in Say All for more information.

Default value: checked

If Announce landmarks during navigation is checked, Cthulhu will tell you when you navigate into or out of an ARIA landmark. Note that this setting is independent of whether or not this announcement is made during Say All. See Announce Contextual Information in Say All for more information.

Default value: checked

If Announce lists during navigation is checked, Cthulhu will tell you when you navigate into or out of a list. Note that this setting is independent of whether or not this announcement is made during Say All. See Announce Contextual Information in Say All for more information.

Default value: checked

If Announce panels during navigation is checked, Cthulhu will tell you when you navigate into or out of a panel. Note that this setting is independent of whether or not this announcement is made during Say All. See Announce Contextual Information in Say All for more information.

Default value: checked

If Announce tables during navigation is checked, Cthulhu will tell you when you navigate into or out of a table. Note that this setting is independent of whether or not this announcement is made during Say All. See Announce Contextual Information in Say All for more information.

Default value: checked

If Speak full row in GUI tables is checked, as you arrow up and down in application tables such as the list of messages in your Inbox, Cthulhu will speak the entire row. If you would prefer to hear only the cell with focus, you should uncheck this checkbox.

Default value: checked

If Speak full row in document tables is checked, as you arrow up and down in tables such as those found in Writer and web documents, Cthulhu will speak the entire row. If you would prefer to hear only the cell with focus, you should uncheck this checkbox.

Default value: checked

If Speak full row in spreadsheets is checked, as you arrow up and down in spreadsheets, Cthulhu will speak the entire row. If you would prefer to hear only the cell with focus, you should uncheck this checkbox.

Default value: not checked