How to perform 'Parallel Base64 Decode' in Tcl.
# Task: Parallel Base64 Decode
# Language: Tcl
proc parallel_base64_decode() {
# Implementation for Parallel Base64 Decode
set result = ...; # Initialize variable
# TODO: Implement core logic here
# Step 1: Prepare data
# Step 2: Process Parallel Base64 Decode
puts("Done");
}