diff --git a/Global-Options.md b/Global-Options.md
new file mode 100644
index 0000000..96e1678
--- /dev/null
+++ b/Global-Options.md
@@ -0,0 +1,24 @@
+These options apply to all commands but must be placed before the command:
+```
+   -verbose, -v 		show more detailed information
+   -debug, -d 			show even more detailed information, useful for debugging
+   -log 			enable log-style output
+   -stack 			print the stack trace when an error occurs
+   -no-script 			do not run script before or after command execution
+   -background 			read passwords, tokens, or keys only from keychain/keyring or env
+   -profile <address:port> 	enable the profiling tool and listen on the specified address:port
+   -help, -h 			show help
+
+```
+
+The `-verbose` option will show TRACE level messages, while the `-debug` option enables DEBUG level messages.  By default, only INFO, WARNING, and ERROR messages are displayed.
+
+The `-log` option will show the timestamp, level, and the message id of each log message.
+
+The `-stack` option is used to dump the stack trace when an error occurs to help locate where the error is.
+
+The `no-script` option will stop [[Pre Command and Post Command Scripts]] from running.  This is usually used to avoid an infinite loop of command execution.
+
+The `-background` option will instruct Duplicacy not to ask for interactive password input.  As a result, Duplicacy will read all credentials only from keychain/keyring or the environment variables.  If a credential can't be found, an error will be reported.
+
+With the `-profile` option, you can open `http://address:port/debug/pprof/` in a browser to profile a running Duplicacy instance.  Please refer to https://golang.org/pkg/net/http/pprof/ for instructions.