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Starting on some User Guide additions and edits. This is work in progress!

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doc/user_guide/en/new_features.adoc
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[[NEW_FEATURES]] [[NEW_FEATURES]]
=== New in Version {VERSION_MAJOR}.{VERSION_MINOR} === New in Version {VERSION_MAJOR}.{VERSION_MINOR}
_WSJT-X 2.5_ introduces an enhanced Q65 decoder that measures and _WSJT-X 2.6_ implements features in support of the ARRL International
compensates for linear frequency drifts of Q65 signals. Activate this Digital Contest. This contest's scoring is distance based, so the
feature by setting a spinner control *Max Drift* on the _WSJT-X_ main *Call 1st* checkbox is replaced by a drop-down control offering *CQ
window to a number greater than 0. We suggest a setting of 10 for Max Dist* as an alternative. A new window labeled *Active Stations*
submode Q65-60A, the recommended submode for EME on 50 and 144 MHz, displays a list of received but unworked callsigns sorted in
which will accommodate drift rates up to 20 Hz/minute. Similarly, we decreasing order of potential contest points. See Section 7.4 for
suggest *Max Drift* = 40 for submode Q65-15C, used for for 10 GHz QSOs more details on these features.
(up to 900 km) via aircraft scatter and drift rates up to about 20
Hz/s. When *Max Drift* = 50 the decoder will use an enhanced algorithm Decoding performance for FT8 and Q65 has been improved for situations
to compensate for larger aircraft scatter drift rates, successful where _a priori_ (AP) information is available.
decodes with this algorithm are tagged with a `q5` indicator.
*Echo* mode now offers a button labeled *Clear Avg* and produces
reliable measurements of SNR and Doppler spread. The related
*Measure* function can be used to measure these quantities for a
received unmodulated carrier -- for example, a key-down test signal
emitted by another station and reflected from the Moon.
New buttons on the main window allow quick changes between the modes
FT4, FT8, MSK144, Q65, and JT65. Another button allows toggling the
FT8 Hound mode ON or OFF.
Optional highlighting is provided for DX Call and DX Grid, and for
messages containing RR73 or 73.
New options are provided for writing to file ALL.TXT. You can request
starting a suitably labeled new file every month or every year, and you
can disable writing altogether.
On the Windows platform only, _WSJT-X 2.5_ installations now include
an early version of _MAP65 3.0_. This program works together with
suitable hardware that converts RF to baseband. The hardware/software
combination implements a wideband, highly optimized receiver for the
Q65 and JT65 protocols, with matching transmitting features that
require a standard SSB transceiver. _MAP65_ is effective in both
single-polarization and dual-polarization systems. If two
polarization channels are available, _MAP65_ determines and matches
the linear polarization angle of each decodable signal. This
capability provides a major advantage for efficient EME communication
on bands up to 432 MHz. A single-channel _MAP65_ system works
extremely well for EME on 1296 MHz and higher bands, displaying all
signals in a 90 kHz sub-band and decoding all the Q65 and JT65
signals.