New clear input box option added

Another release! Sip v3.3.1 - A MUD Client!

Natural tabbing added for UI elements
Phonebook entry auto-shown in connect drop-down
Enter can be pressed on highlighted buttons to click them.
clearWindow added to official API functions
Loading screen says 'Loading' now.
MXP menus now open at proper location when Enter is pressed on them
Escape key closes open dialogs.
Menus can now be accessed with Alt-key shortcuts
Menu entries can now be accessed with keyboard keys
Menus can now be navigated with arrow keys.
Drag corners on dialogs and frames now have correct cursor cue.
MXP anchors now support actual urls without complaining, and TARGET argument
MXP FRAMEs now supports DOCK argument
MXP FRAME children with 100% height/width will auto-fit remaining space.
MXP FRAMEs now support pixel sizing properly
Better screen-reader support (special tag attributes added)
Fixed NEWENVIRON CHARSET response
Couple of new plugins (javascript executor, and GMCP viewer)

MXP Frame fixes for fixed-pixel sub-frames.
Char mode fix (recv backspace)

Plugins can now be downloaded from a chooser.
MXP fixes.

Default max lines is now 10,000 per window
Fix to MXP popup bug.
Better scrollback support.
GMCP support for IRE.Composer.Edit

MXP fix for processing long tags over split packets.

Fix to plugin menus
Fix to text selection.

More reliable version checks in About
Can now download media from Custom Media
Plugins can now set required versions
Loading plugins with media now gives better overwrite popup
MXP now supports floating window close buttons
MXP img tags support styles
MXP input tag supports checkboxes/radio buttons
Top menu compacted, mostly to support more plugin menus
Mapper now supports dragging rooms
Mapper has Import/Export area json
Mapper supports speedwalking between areas
Mapper now supports browsing other areas better
Mapper re-centers map when current room is off-screen
Bug fixed in plugin menus
Bug fixed in closing internal frames
Plugins can now access all their json fields, and connection url

No much:
Mapper fixes for the new mapper plugin, mostly in speedwalking.
More JS security for plugins: (Basically, plugins can use displayText to insert MXP into a page, which is fine, but some MXP tags allow, or even encourage, JavaScript, making them a back-door. Since 3.1.6, the idea is to limit all JavaScript calls to only those that plugins generally are allowed.