If you change certain aspects of the site's appearance using the accessibility sidebar, it may set these cookies to manage and remember your settings. The wahFontColor and wahBgColor cookies, which are set if you alter the site's color scheme, normally expire after about 14 days, but you can remove them immediately by clicking the "Restore Defaults" button on the sidebar.
I may sometimes present an alternative version of the sidebar offering different options, which may set the a11y-desaturated, a11y-high-contrast, and/or a11y-larger-fontsize cookies if you change those settings. These a11y cookies normally expire after about seven days, but are removed immediately if you restore the applicable settings to their default values.
Accessing certain posts or pages on this website may require you to enter a specific password. If you correctly enter the password, the site saves this cookie on your device to allow you access to the password-protected post or page. (For this cookie, "xx" will be a cryptographic hash.) There may be more than one of these cookies, particularly if you access several password-protected posts with different passwords. The cookies normally expire in about 10 days, and are not set at all if you do not access any password-protected content.