The software automatically merge curves in the selected curves, when these curves
merge tolerance is less than the setting of combine error.
2.13.8 Bitmap Handle
Click ，and select a bitmap, then click menu【Handle】->【Bitmap handle】, or
click System Bar .
In the top right of the dialog box displays the information of the current image.
Be noted that，the horizontal resolution and vertical resolution is changing with drag
scaling.
【Apply to view】：Current settings is only used for preview, without affecting to the
original bitmap，press button【Cancel】，bitmap will returned to the state of original image.
Therefore, only use for adjust effect. However, this approach requires more time and
memory Space.
【Apply to source】：Current sttings is use for orginal bitmap directly，so even finally
click button【Cancel】，image will also unable to return to the original image. Therefore, it
mainly used in multi-step operation，and the current operation of this step is necessary to
do, such as general pictures must be transformed into grayscale. This can save the
computing time of the follow-up operation.
【Save as】：Retain the results of the previous operation, In addition to using【Apply
to view】can also be exported。On this basic, to facilitate subsequent processing.
