diff --git a/docs/advanced-usage.md b/docs/advanced-usage.md
index befe52dfe..c4d066a6b 100644
--- a/docs/advanced-usage.md
+++ b/docs/advanced-usage.md
@@ -93,6 +93,8 @@ steps:
 ```
 
 ## Installing custom Java package type
+Input `java-package` is optional and intended to select a packaging variant(subset) of the distro. List of available options is "jdk", "jre", "jdk+fx" or "jre+fx". If the input omiited it is set to "jdk".
+
 ```yaml
 steps:
 - uses: actions/checkout@v3
@@ -106,6 +108,8 @@ steps:
 
 
 ## Installing custom Java architecture
+Input `architecture` is optional and selects a targer architecture. Available values are "x86", "x64", "armv7", "aarch64" or "ppc64le". The default value is "x64".
+
 
 ```yaml
 steps: