Added flags documentation

- Updated README.md

README.md

@@ -62,9 +62,9 @@ This plugin adds the following commands:
 - `/image clear <x z world> <r> [<placed-by>]`: Remove all placed images in a radius of `r` blocks around an origin.
 - `/image describe`: Show detailed information about a placed image.
 - `/image download <url> <filename>`: Download an image from a URL and place it in the images directory.
-- `/image give <player> <filename> <amount> <width> [<height>]`: Give image items that can be placed later to a player.
+- `/image give <player> <filename> <amount> <w> [<h>] [<flags>]`: Give image items that can be placed later to a player.
 - `/image list [<page>]`: List all available files in the images directory.
-- `/image place <filename> <width> [<height>]`: Place an image of size `width`x`height` blocks.
+- `/image place <filename> <w> [<h>] [<flags>]`: Place an image of size `w`x`h` blocks.
 - `/image remove`: Remove a placed image from the world without deleting the image file.
 - `/image top`: List players with the most placed images.
 
@@ -76,10 +76,14 @@ This plugin adds the following commands:
   `/image download "https://www.example.com/a/b/c/1234.jpg" imagename.jpg`
 - Give 10 image items to "TestPlayer" for the "test.jpg" image (3x5 blocks)\
   `/image give TestPlayer test.jpg 10 3 5`
+- Give 10 image items to "TestPlayer" that will not drop an image item when removed\
+  `/image give TestPlayer test.jpg 10 3 5 -DROP`
 - Start the dialog to place an image with a width of 3 blocks and auto height\
   `/image place imagename.jpg 3`
 - Start the dialog to place a 3-blocks wide and 2-blocks high image\
   `/image place imagename.jpg 3 2`
+- Start the dialog to place an image that glows in the dark\
+  `/image place imagename.jpg 3 2 +GLOW`
 - Start the dialog to remove a placed image while keeping the original file\
   `/image remove`
 - Remove all placed images in a radius of 5 blocks around the spawn\
@@ -108,6 +112,21 @@ such as [LuckPerms](https://luckperms.net/) or [GroupManager](https://elgarl.git
 
 Both these plugins have been tested to work with Yamipa, although any similar one should work just fine.
 
+## Flags
+Images from this plugin have a set of boolean attributes called "flags" that modify its behavior. Possible values are:
+
+- `ANIM` (animatable): Whether an image should be animated or not, useful when you don't want a GIF image to play.
+- `REMO` (removable): Whether an image can be removed by any player by left-clicking it.
+- `DROP` (droppable): Whether an image drops an image item when is removed by any player.
+- `GLOW` (glowing): Whether an image glows in the dark (only works on Minecraft 1.17 and above).
+
+By default, images placed with the "/image place" command only have the `ANIM` flag.
+Similarly, image items issued with the "/image give" command have `ANIM`, `REMO` and `DROP` flags.
+
+Default flags can be modified through the "<flag>" argument.
+To add a flag to the default ones use "+{FLAG_NAME}" (e.g. `+GLOW`), and to remove it use "-{FLAG_NAME}" (e.g. `-ANIM`).
+You can modify multiple flags separating them with commas (e.g. `+GLOW,-ANIM`).
+
 ## How does it work?
 As you may have already guessed, Minecraft does not support the placing of image files.
 Yamipa bypasses this limitation by using two built-in features (**item frames and maps**) to render custom images.