Images 

Create a device to allow the user to select an image as in this example:


{cms type=imagesource id=my_image scope=section}
<img src="{cms type=imagetarget id=my_image scope=section}" style="width:200px;height:100px">

The image will be resized to fit in a box with maximum dimensions 200px x 100px.
You can use a textsource/target cms tag to allow the editor to change the ALT text.