what is <?????> = <????> in abap rewards for help......

hello....

In the below code what does <x_buffer> = <x_aplog> means while debugging <x_aplog> consist of value 3330312020412031303030323431333130303141303131202020323030353038303439393939313233314B2020202020202020203030303230303730323133524153.

can anyone explain in detail what does it means. Pls its urgent.

LOOP AT aplog.

IF t_id-hr_is_pp = kreuz.

CLEAR aplog-ukz.

ENDIF.

CASE aplog-ukz.

WHEN space.

ppkey = aplog.

READ TABLE buffer

WITH KEY ppkey

BINARY SEARCH.

<x_buffer> = <x_aplog>.

IF sy-subrc = 4.

INSERT buffer INDEX sy-tabix.

ELSEIF sy-subrc = 8.

APPEND buffer.

Regards.