Pipe telemetry. Writes data-types and bytes written
pt, writes statistics about the pipeline. The telemetry is written directly to the OS's STDERR so to preserved the pipeline.
<stdin> -> pt -> <stdout>
curl -s https://example.com/bigfile.bin -> pt -> > bigfile.bin (though _murex_ does also have it's own HTTP clients, `get`, `post` and
>>(append file): Writes STDIN to disk - appending contents if file already exists
>(truncate file): Writes STDIN to disk - overwriting contents if file already exists
get: Makes a standard HTTP request and returns the result as a JSON object
getfile: Makes a standard HTTP request and return the contents as murex-aware data type for passing along murex pipelines.
post: HTTP POST request with a JSON-parsable return