About a month ago, Samsung updated the Software Development Kit (SDK) for the Galaxy Note series, but it didn’t come with the tool that'd make it easier for developers to create apps that are compatible with the Note 2’s multi-window function.

As a follow up, version 2.2.5 of the S-Pen SDK for the Note 2 is now available to download from Samsung’s website. The latest SDK lets software makers integrate the multi-window feature of the Galaxy Note 2, and possibly other devices, into their apps.

Here’s what’s new on the S-Pen SDK:

• Multi Window and its related APIs were added to improve the usability of apps that utilize the S-Pen on the GALAXY Note II.
• The screen can be split vertically or horizontally within apps that use the S-Pen without switching to another screen, allowing the user to display related apps on one screen simultaneously.
• Multi Window supports data transaction using the clipboard, as well as drag & drop to allow easy sharing of data between apps that use Multi Window.

Samsung has also listed some duplicate APIs that should be avoided, as well as fixed some errors found on the previous version of the kit. In addition, there are 20 sample apps that should help inspire how the true multi-tasking feature can be best implemented.