Map: Changed rectangle drawing and creating "ramps"

[Sirius]

After testing  CentrED there where two things I missed

1. Sometimes I've drawed "curved lines"  in the map to set raw boundaries for an area I want to work on (only the boundaries I've also planed to show later in the map). The easiest way to do this was to select a tile, then click and hold the left mouse button and then drawning the shape of this area by just moving the mouse over the tiles I want for the border.
In CentrED this works only if I single click every tile I want to use for the areaborder, because if I hold the left mouse button it draws me a rectangle.
My proposal is to only draw an rectangle if you hold Ctrl or Shift while holding the left mousebutton (like it is handled in the most programs for graphic design, for example Gimp). And if you only hold the left mouse button it automaticaly execute the "change tile"-command every few milliseconds, so that you must not click on every single tile to change it.

2. A "ramp"-button that allows you to mark an area and automaticaly set the z-value for each tilerow to the right value so that a ramp is created which allows players to move on. For the properties of this tool, it should be possible to set the max-height difference between each tilerow and/or the height of the first and/or the last line (or it takes autmaticaly the height from the first and the last line of the marked area). Edit: Or it calculates the height of the last line with the amount of lines in the marked area and the seted max-height difference.