How to Base64 Decode in Tcl - Code Snippet

# Task: Base64 Decode
# Language: Tcl

proc base64_decode() {
    # Implementation for Base64 Decode
    set result = ...; # Initialize variable
    # TODO: Implement core logic here
    # Step 1: Prepare data
    # Step 2: Process Base64 Decode
    puts("Done");
}