I am unable to follow your reply posting. Your statement ... HO Quota is released by concerned DRM before one hour of charting... how it is relevent to my reply post !!!
@ My reply post is pertaining to straight way booking under specific ...HO quota.
@ Your reply posting is purporting to a stage of release of unused HO quota seats before one hour of charting to WL passengers be it PRS counter or E-ticket holders.
@...
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I always try to avoid any head-on collision.

In continuation ...
Details of various quotas- sub-quotas... active or inactive / past or present with its abbreviations...
S.No. Quota Description
1. GN General Quota
2. LD Ladies Quota
3....
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HO Head quarters/high official Quota
4. DF Quota
5. RC Reservation against Cancellation (RAC) Quota
6. OS Outstation Quota
7. PH Parliament house
8. FT Foreign tourist Quota
9 ND Day Night Quota
10. RE Rail Employee Quota
11. RS Roadside Quota
12 RT Return journey Quota
13 DP Duty Pass Quota
14 HL High Official Ladies Quota
15 LO Ladies Outstation Quota
16 SG State Government Quota
17 CP CRPF Quota
18 XX Undefined Quota
19 CK Link Quota
20 PQ Pooled Quota
21 ZZ Undefined Quota
22 SS Source Station Quota
23 HP Physically Handicapped Quota
24 GN/RS General / Road Side Quota
25 LD/RS Ladies
26 HO/RS High Official
27 DF/RS Defence
28 RC/RS RAC
29 OS/RS Outstation
30 PH/RS Parliament House
31 FT/RS Foreign Tourist Quota
32 ND/RS Day and Night
33 RE/RS Rail Employee
34 DP/RS Duty Pass
35 HL/RS HOR ladies
36 LO/RS Ladies Outstation
37 SG/RS State Government
38 CP/RS CRPF
39 XX/RS Undefined
40 CK/RS Link
41 ZZ/RS Undefined
42 TXR TRAIN EXAMINER
43 DSL Diesel Staff
44 SFW Safaiwala
46 CTG Catering Staff
47 LIB Library Staff
48 TS Train Superintendent
49 TTE Train Examiner
50 CGD Conductor Guard
51 RPF Railway Protection Force
52 LCO Loco Staff
53 ATY Amenity Staff
54 TEL Telephone Staff
55 ACA AC Coach Attendant
56 IAG Instant Action Group
.........

In continuation ...
As per TOI report sometime in June 2009 ...
"A high Emergency Quotient can get you a train ticket"
@ .... Emergency quota (EQ) in trains has been designed to help passengers who are under urgent need to travel. Anyone with a genuine reason can claim reservation under this quota. All a passenger has to do is to...
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write an application and drop it at the divisional railway manager's office. The reason for claiming the reservation has to be quoted.
@ A passenger can also hand over the application to the commercial division of the zonal railways concerned with the reason to travel written clearly on it. In case of terminally ill patients, the application should be accompanied with the doctor's certificate.
@ Mostly, those actually needing a seat get one from EQ. It is the right of a passenger and railways might find it tough to deny. Only that application claiming EQ should reach the office concerned on time. Secondly, it is also important that an application has been written convincingly accompanying all documents of proof. In case it does not need a proof, it should be reasonable enough to highlight the requirement.
@ At last, securing a seat will depend on how many seats are available under EQ on that particular train and how many passengers have already applied for it. Moreover, how many of these passengers have a more urgent reason to travel than you. Though there is no parameter fixed to decide the priority, reservation under EQ should be given to those who have a genuine urgent reason.
However, existence of EQ does not mean that worries of waitlisted passengers have ended. How many times the seats allocated under EQ are distributed as per the rules and how many times genuine-demands get noticed is a point to consider..... ""