Under the menu bar, select Window → Select Layer and History (check). Otherwise, if you want to open it, just remove the tick.

Adobe Photoshop, referred to as "PS", is an image processing software developed and released by Adobe Systems.

Photoshop mainly deals with digital images composed of pixels. With its numerous editing and drawing tools, you can edit pictures effectively. Ps has many functions, including pictures, graphics, text, video, publishing and so on.

In 2003, Adobe Photoshop 8 was renamed Adobe Photoshop CS. 20 13 July, Adobe released the latest version of Photoshop CC. Since then, Photoshop CS6, as the last version of Adobe CS series, has been replaced by the new CC series.

Adobe supports Windows operating system, Android system and Mac OS, but users of Linux operating system can use Wine to run Photoshop.