diff --git a/docs/cli.md b/docs/cli.md
index 8eba2f45..ff4b4e72 100644
--- a/docs/cli.md
+++ b/docs/cli.md
@@ -330,7 +330,7 @@ Creates a contact sheet called `FiveColFile.qoi` from the images in the current
 ```
 tacentview -ckv 2 -o jpg,bmp --po contact[7,7,white]
 ```
-In this example we set both the number of columns and the number of rows. If there are more than 49 images in the input directory, only the first 49 will be included. If there are fewer than 49 input images, the contact-sheet (flipbook) will have some _empty_ pages. Empty pages get filled with opaque white. If white was not specified or * was used, the fill would be transparent black. Since JPG does not support alpha, the JPG output would just get black for the empty pages. The BMP output supports alpha so those pages would be transparent black. The fill colour may be precisely specified in hexadecimal using #RRGGBBAA. If a single decimal integer is used instead, the fill is that value for all RGBA channels. The predefined colour names are: black, white, grey, red, green, blue, yellow, cyan, magenta, and trans (transparent black, the default).
+In this example we set both the number of columns and the number of rows. If there are more than 49 images in the input directory, only the first 49 will be included. If there are fewer than 49 input images, the contact-sheet (flipbook) will have some _empty_ pages. Empty pages get filled with opaque white. If white was not specified or * was used, the fill would be transparent black. Since JPG does not support alpha, the JPG output ignores transparency (it will be opaque). The BMP output supports alpha so transparency in both the pages and empty-page fill-colour is taken into account. The fill colour may be precisely specified in hexadecimal using #RRGGBBAA. If a single decimal integer is used instead, the fill is that value for all RGBA channels. The predefined colour names are: black, white, grey, red, green, blue, yellow, cyan, magenta, and trans (transparent black, the default). Colour names other than `trans` all default alpha to full (opaque).
 
 
 ---