htX Baskets has been modified to allow Long and Sell Short orders within the same basket. 

This document describes the 2 ways external orders may be linked to Pairs Models. An external order would be a parent, or master order that originates in some system other than htX. 

htX ListTrading is an application for traders who need to manage multiple, or large lists of orders at one time. htX ListTrading allows traders to create multiple lists of orders, either manually or through file import, apply trading strategies to those lists, send slices of the list in a few short mouseclicks, and manage exposure and risk.

The htX Baskets supports importing a single file, or groups of files into separate baskets. This post describes some of the features and how to use them. 

htX Pairs Trading has a number of risk checks and guards against incorrect data, user error, and extreme market volatility. The same checks are applied to each order/model in the application.

The Currency features in htX Pairs allows traders to configure and use any currency rate pairs available on their quote feed. It also allows the trader to customize any number of different securities for a specific currency. For instance, the trader could use either the spot rate or the FX future quote to drive the cross border position.

htX uses suffixes added to the end of symbols, called extensions, to help define the security and determine trading defaults. They can also be used to create customized shortcuts. An extension is added to the end of the symbol and is separated from the symbol by a period. They are similar to exchange codes that you might see in Rics or Bloomberg Tickers.

For instance, the symbol for Barrick Gold Corp in Toronto would be, ABX.TO. In this case, the extension is TO. If there is no extension, then the assumption is the symbol is for a US stock. US stocks have a special case where there are actually 2 extensions, one for Listed securities and one for OTC.