The development of corpora inevitably involves the need for segmentation. For most of the corpora, the first segmentation to operate consist in determining silences vs Inter-Pausal Units-i.e. sounding segments. This paper presents the "Search for IPUs" feature included in SPPAS-the automatic annotation and analysis of speech software tool distributed under the terms of public licenses. Particularly, this paper is focusing on the use and the evaluation of this feature on Cheese! corpus, a corpus of read then conversational speech between two participants. The paper reports the number of manual actions that are required for a user to check the automatic annotation: add new IPUs, ignore un-relevant ones, move boundaries, etc. Such evaluation validates the proposed method.