In L4D2, how to print text in chat panel privately for yourself to see?

Typically if you want to write to the in-game chat panel, you use say
and say_team
to write to everyone and your team-only, respectively.
But what about writing to yourself? For example, if I set commands to remind me of options available (a menu system), how could I have this private to myself?
Alternatively, how can I display text the same way some modded servers do? (Like XPM, Buy, DLR servers, etc., only without the use of an actual modded server)
Here's an example of those in-game menus (see highlighted in red):
Also open to other alternative, like game instructor hints, but I have no idea how to access it from the console / keybinds.
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How do you type in l4d2 chat?
There is built-in voice chat support in Left4Dead 2. For PC, the default key is C . For XBox-360, just plug your mic in or turn on the wireless mic. You can also set it to open mic, so you don't have to press C to talk.How can I get better at l4d?
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Left 4 Dead 2 2)Type "openserverbrowser" into the console. 3)In the server browser window, click on the custom tab. 5)Clicking the bars at the top will put them in ascending/descending order of that item. 6)Right click the server in the list you want to play on and click "View Game Info".How do I turn off voice chat in l4d2?
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